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Finding the Fourth Proportional to 7,643.92, 10,549 and 4,287.44

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Solution

The fourth proportional to 7,643.92, 10,549 and 4,287.44 is: 5,916.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,643.92 : 10,549 = 4,287.44 : x
  2. Step 2: Convert to fraction form
    7,643.92/10,549 = 4,287.44/x
  3. Step 3: Cross multiply
    7,643.92x = 10,549 × 4,287.44
  4. Step 4: Simplify right side
    7,643.92x = 45,228,204.56
  5. Step 5: Solve for x
    x = 45,228,204.56/7,643.92
  6. Step 6: Final answer
    x = 5,916.89

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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.