Home / 9,121.28-12,587.32-4,929.52

Finding the Fourth Proportional to 9,121.28, 12,587.32 and 4,929.52

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Solution

The fourth proportional to 9,121.28, 12,587.32 and 4,929.52 is: 6,802.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,121.28 : 12,587.32 = 4,929.52 : x
  2. Step 2: Convert to fraction form
    9,121.28/12,587.32 = 4,929.52/x
  3. Step 3: Cross multiply
    9,121.28x = 12,587.32 × 4,929.52
  4. Step 4: Simplify right side
    9,121.28x = 62,049,445.69
  5. Step 5: Solve for x
    x = 62,049,445.69/9,121.28
  6. Step 6: Final answer
    x = 6,802.71

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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.