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Finding the Fourth Proportional to 10,479.76, 15,715.03 and 5,548.25

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Solution

The fourth proportional to 10,479.76, 15,715.03 and 5,548.25 is: 8,319.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,479.76 : 15,715.03 = 5,548.25 : x
  2. Step 2: Convert to fraction form
    10,479.76/15,715.03 = 5,548.25/x
  3. Step 3: Cross multiply
    10,479.76x = 15,715.03 × 5,548.25
  4. Step 4: Simplify right side
    10,479.76x = 87,190,902.49
  5. Step 5: Solve for x
    x = 87,190,902.49/10,479.76
  6. Step 6: Final answer
    x = 8,319.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.