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Finding the Fourth Proportional to 7,901.54, 10,906.30 and 4,915.59

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Solution

The fourth proportional to 7,901.54, 10,906.30 and 4,915.59 is: 6,784.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,901.54 : 10,906.30 = 4,915.59 : x
  2. Step 2: Convert to fraction form
    7,901.54/10,906.30 = 4,915.59/x
  3. Step 3: Cross multiply
    7,901.54x = 10,906.30 × 4,915.59
  4. Step 4: Simplify right side
    7,901.54x = 53,610,898.16
  5. Step 5: Solve for x
    x = 53,610,898.16/7,901.54
  6. Step 6: Final answer
    x = 6,784.87

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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.