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Finding the Fourth Proportional to 8,267.76, 11,407.91 and 5,281.29

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Solution

The fourth proportional to 8,267.76, 11,407.91 and 5,281.29 is: 7,287.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,267.76 : 11,407.91 = 5,281.29 : x
  2. Step 2: Convert to fraction form
    8,267.76/11,407.91 = 5,281.29/x
  3. Step 3: Cross multiply
    8,267.76x = 11,407.91 × 5,281.29
  4. Step 4: Simplify right side
    8,267.76x = 60,248,454.60
  5. Step 5: Solve for x
    x = 60,248,454.60/8,267.76
  6. Step 6: Final answer
    x = 7,287.16

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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.