Home / 9,189.18-12,681.35-5,210.46

Finding the Fourth Proportional to 9,189.18, 12,681.35 and 5,210.46

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Solution

The fourth proportional to 9,189.18, 12,681.35 and 5,210.46 is: 7,190.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,189.18 : 12,681.35 = 5,210.46 : x
  2. Step 2: Convert to fraction form
    9,189.18/12,681.35 = 5,210.46/x
  3. Step 3: Cross multiply
    9,189.18x = 12,681.35 × 5,210.46
  4. Step 4: Simplify right side
    9,189.18x = 66,075,666.92
  5. Step 5: Solve for x
    x = 66,075,666.92/9,189.18
  6. Step 6: Final answer
    x = 7,190.59

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.