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Finding the Fourth Proportional to 8,874.48, 12,246.21 and 5,339.64

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Solution

The fourth proportional to 8,874.48, 12,246.21 and 5,339.64 is: 7,368.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,874.48 : 12,246.21 = 5,339.64 : x
  2. Step 2: Convert to fraction form
    8,874.48/12,246.21 = 5,339.64/x
  3. Step 3: Cross multiply
    8,874.48x = 12,246.21 × 5,339.64
  4. Step 4: Simplify right side
    8,874.48x = 65,390,352.76
  5. Step 5: Solve for x
    x = 65,390,352.76/8,874.48
  6. Step 6: Final answer
    x = 7,368.36

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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.