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Finding the Fourth Proportional to 8,908.64, 12,293.76 and 4,929.74

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Solution

The fourth proportional to 8,908.64, 12,293.76 and 4,929.74 is: 6,802.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,908.64 : 12,293.76 = 4,929.74 : x
  2. Step 2: Convert to fraction form
    8,908.64/12,293.76 = 4,929.74/x
  3. Step 3: Cross multiply
    8,908.64x = 12,293.76 × 4,929.74
  4. Step 4: Simplify right side
    8,908.64x = 60,605,040.42
  5. Step 5: Solve for x
    x = 60,605,040.42/8,908.64
  6. Step 6: Final answer
    x = 6,802.95

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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.