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Finding the Fourth Proportional to 9,212.92, 12,713.80 and 5,021.16

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Solution

The fourth proportional to 9,212.92, 12,713.80 and 5,021.16 is: 6,929.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,212.92 : 12,713.80 = 5,021.16 : x
  2. Step 2: Convert to fraction form
    9,212.92/12,713.80 = 5,021.16/x
  3. Step 3: Cross multiply
    9,212.92x = 12,713.80 × 5,021.16
  4. Step 4: Simplify right side
    9,212.92x = 63,838,024.01
  5. Step 5: Solve for x
    x = 63,838,024.01/9,212.92
  6. Step 6: Final answer
    x = 6,929.18

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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.