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Finding the Fourth Proportional to 7,908.90, 10,915.47 and 4,766.82

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Solution

The fourth proportional to 7,908.90, 10,915.47 and 4,766.82 is: 6,578.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,908.90 : 10,915.47 = 4,766.82 : x
  2. Step 2: Convert to fraction form
    7,908.90/10,915.47 = 4,766.82/x
  3. Step 3: Cross multiply
    7,908.90x = 10,915.47 × 4,766.82
  4. Step 4: Simplify right side
    7,908.90x = 52,032,080.71
  5. Step 5: Solve for x
    x = 52,032,080.71/7,908.90
  6. Step 6: Final answer
    x = 6,578.93

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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.