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Finding the Fourth Proportional to 5,490.05, 8,235.09 and 1,330.05

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Solution

The fourth proportional to 5,490.05, 8,235.09 and 1,330.05 is: 1,995.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,490.05 : 8,235.09 = 1,330.05 : x
  2. Step 2: Convert to fraction form
    5,490.05/8,235.09 = 1,330.05/x
  3. Step 3: Cross multiply
    5,490.05x = 8,235.09 × 1,330.05
  4. Step 4: Simplify right side
    5,490.05x = 10,953,064.19
  5. Step 5: Solve for x
    x = 10,953,064.19/5,490.05
  6. Step 6: Final answer
    x = 1,995.08

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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.