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Finding the Fourth Proportional to 8,592.77, 12,905.55 and 5,312.27

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Solution

The fourth proportional to 8,592.77, 12,905.55 and 5,312.27 is: 7,978.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,592.77 : 12,905.55 = 5,312.27 : x
  2. Step 2: Convert to fraction form
    8,592.77/12,905.55 = 5,312.27/x
  3. Step 3: Cross multiply
    8,592.77x = 12,905.55 × 5,312.27
  4. Step 4: Simplify right side
    8,592.77x = 68,557,766.10
  5. Step 5: Solve for x
    x = 68,557,766.10/8,592.77
  6. Step 6: Final answer
    x = 7,978.54

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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.