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Finding the Fourth Proportional to 9,479.76, 13,082.10 and 5,288

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Solution

The fourth proportional to 9,479.76, 13,082.10 and 5,288 is: 7,297.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,479.76 : 13,082.10 = 5,288 : x
  2. Step 2: Convert to fraction form
    9,479.76/13,082.10 = 5,288/x
  3. Step 3: Cross multiply
    9,479.76x = 13,082.10 × 5,288
  4. Step 4: Simplify right side
    9,479.76x = 69,178,144.80
  5. Step 5: Solve for x
    x = 69,178,144.80/9,479.76
  6. Step 6: Final answer
    x = 7,297.46

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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.