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Finding the Fourth Proportional to 7,891.53, 10,890.27 and 4,354.71

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Solution

The fourth proportional to 7,891.53, 10,890.27 and 4,354.71 is: 6,009.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,891.53 : 10,890.27 = 4,354.71 : x
  2. Step 2: Convert to fraction form
    7,891.53/10,890.27 = 4,354.71/x
  3. Step 3: Cross multiply
    7,891.53x = 10,890.27 × 4,354.71
  4. Step 4: Simplify right side
    7,891.53x = 47,423,967.67
  5. Step 5: Solve for x
    x = 47,423,967.67/7,891.53
  6. Step 6: Final answer
    x = 6,009.48

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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.