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Finding the Fourth Proportional to 5,281.78, 7,281.96 and 3,288.88

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Solution

The fourth proportional to 5,281.78, 7,281.96 and 3,288.88 is: 4,534.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,281.78 : 7,281.96 = 3,288.88 : x
  2. Step 2: Convert to fraction form
    5,281.78/7,281.96 = 3,288.88/x
  3. Step 3: Cross multiply
    5,281.78x = 7,281.96 × 3,288.88
  4. Step 4: Simplify right side
    5,281.78x = 23,949,492.60
  5. Step 5: Solve for x
    x = 23,949,492.60/5,281.78
  6. Step 6: Final answer
    x = 4,534.36

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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.