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Finding the Fourth Proportional to 7,279.62, 10,045.50 and 4,135.74

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Solution

The fourth proportional to 7,279.62, 10,045.50 and 4,135.74 is: 5,707.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,279.62 : 10,045.50 = 4,135.74 : x
  2. Step 2: Convert to fraction form
    7,279.62/10,045.50 = 4,135.74/x
  3. Step 3: Cross multiply
    7,279.62x = 10,045.50 × 4,135.74
  4. Step 4: Simplify right side
    7,279.62x = 41,545,576.17
  5. Step 5: Solve for x
    x = 41,545,576.17/7,279.62
  6. Step 6: Final answer
    x = 5,707.11

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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.