Home / 9,412.67-12,989.50-5,220.92

Finding the Fourth Proportional to 9,412.67, 12,989.50 and 5,220.92

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Solution

The fourth proportional to 9,412.67, 12,989.50 and 5,220.92 is: 7,204.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,412.67 : 12,989.50 = 5,220.92 : x
  2. Step 2: Convert to fraction form
    9,412.67/12,989.50 = 5,220.92/x
  3. Step 3: Cross multiply
    9,412.67x = 12,989.50 × 5,220.92
  4. Step 4: Simplify right side
    9,412.67x = 67,817,114.24
  5. Step 5: Solve for x
    x = 67,817,114.24/9,412.67
  6. Step 6: Final answer
    x = 7,204.88

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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.