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Finding the Fourth Proportional to 7,908.64, 10,915.12 and 4,551.23

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Solution

The fourth proportional to 7,908.64, 10,915.12 and 4,551.23 is: 6,281.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,908.64 : 10,915.12 = 4,551.23 : x
  2. Step 2: Convert to fraction form
    7,908.64/10,915.12 = 4,551.23/x
  3. Step 3: Cross multiply
    7,908.64x = 10,915.12 × 4,551.23
  4. Step 4: Simplify right side
    7,908.64x = 49,677,221.60
  5. Step 5: Solve for x
    x = 49,677,221.60/7,908.64
  6. Step 6: Final answer
    x = 6,281.39

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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.