Home / 9,331.29-12,871.39-5,551.90

Finding the Fourth Proportional to 9,331.29, 12,871.39 and 5,551.90

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Solution

The fourth proportional to 9,331.29, 12,871.39 and 5,551.90 is: 7,658.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,331.29 : 12,871.39 = 5,551.90 : x
  2. Step 2: Convert to fraction form
    9,331.29/12,871.39 = 5,551.90/x
  3. Step 3: Cross multiply
    9,331.29x = 12,871.39 × 5,551.90
  4. Step 4: Simplify right side
    9,331.29x = 71,460,670.14
  5. Step 5: Solve for x
    x = 71,460,670.14/9,331.29
  6. Step 6: Final answer
    x = 7,658.18

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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.