Home / 9,412.17-12,988.75-5,220.42

Finding the Fourth Proportional to 9,412.17, 12,988.75 and 5,220.42

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Solution

The fourth proportional to 9,412.17, 12,988.75 and 5,220.42 is: 7,204.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,412.17 : 12,988.75 = 5,220.42 : x
  2. Step 2: Convert to fraction form
    9,412.17/12,988.75 = 5,220.42/x
  3. Step 3: Cross multiply
    9,412.17x = 12,988.75 × 5,220.42
  4. Step 4: Simplify right side
    9,412.17x = 67,806,730.28
  5. Step 5: Solve for x
    x = 67,806,730.28/9,412.17
  6. Step 6: Final answer
    x = 7,204.15

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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.