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Finding the Fourth Proportional to 5,490.11, 8,235.18 and 1,330.11

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Solution

The fourth proportional to 5,490.11, 8,235.18 and 1,330.11 is: 1,995.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,490.11 : 8,235.18 = 1,330.11 : x
  2. Step 2: Convert to fraction form
    5,490.11/8,235.18 = 1,330.11/x
  3. Step 3: Cross multiply
    5,490.11x = 8,235.18 × 1,330.11
  4. Step 4: Simplify right side
    5,490.11x = 10,953,647.44
  5. Step 5: Solve for x
    x = 10,953,647.44/5,490.11
  6. Step 6: Final answer
    x = 1,995.16

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Half scale
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Double scale
Find fourth proportional to 5,491.11, 8,236.68 and 1,331.11
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.