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Finding the Fourth Proportional to 7,228.38, 9,971.46 and 4,714.71

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Solution

The fourth proportional to 7,228.38, 9,971.46 and 4,714.71 is: 6,503.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,228.38 : 9,971.46 = 4,714.71 : x
  2. Step 2: Convert to fraction form
    7,228.38/9,971.46 = 4,714.71/x
  3. Step 3: Cross multiply
    7,228.38x = 9,971.46 × 4,714.71
  4. Step 4: Simplify right side
    7,228.38x = 47,012,542.18
  5. Step 5: Solve for x
    x = 47,012,542.18/7,228.38
  6. Step 6: Final answer
    x = 6,503.88

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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.