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Finding the Fourth Proportional to 7,516, 10,371.42 and 4,158.76

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Solution

The fourth proportional to 7,516, 10,371.42 and 4,158.76 is: 5,738.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,516 : 10,371.42 = 4,158.76 : x
  2. Step 2: Convert to fraction form
    7,516/10,371.42 = 4,158.76/x
  3. Step 3: Cross multiply
    7,516x = 10,371.42 × 4,158.76
  4. Step 4: Simplify right side
    7,516x = 43,132,246.64
  5. Step 5: Solve for x
    x = 43,132,246.64/7,516
  6. Step 6: Final answer
    x = 5,738.72

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Half scale
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Double scale
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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.