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Finding the Fourth Proportional to 7,891.90, 10,892.01 and 4,748.74

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Solution

The fourth proportional to 7,891.90, 10,892.01 and 4,748.74 is: 6,553.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,891.90 : 10,892.01 = 4,748.74 : x
  2. Step 2: Convert to fraction form
    7,891.90/10,892.01 = 4,748.74/x
  3. Step 3: Cross multiply
    7,891.90x = 10,892.01 × 4,748.74
  4. Step 4: Simplify right side
    7,891.90x = 51,723,323.57
  5. Step 5: Solve for x
    x = 51,723,323.57/7,891.90
  6. Step 6: Final answer
    x = 6,553.98

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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.