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Finding the Fourth Proportional to 8,962.92, 13,442.60 and 8,518.40

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Solution

The fourth proportional to 8,962.92, 13,442.60 and 8,518.40 is: 12,775.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,962.92 : 13,442.60 = 8,518.40 : x
  2. Step 2: Convert to fraction form
    8,962.92/13,442.60 = 8,518.40/x
  3. Step 3: Cross multiply
    8,962.92x = 13,442.60 × 8,518.40
  4. Step 4: Simplify right side
    8,962.92x = 114,509,443.84
  5. Step 5: Solve for x
    x = 114,509,443.84/8,962.92
  6. Step 6: Final answer
    x = 12,775.91

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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.