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Finding the Fourth Proportional to 8,871.15, 12,242.26 and 4,892.40

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Solution

The fourth proportional to 8,871.15, 12,242.26 and 4,892.40 is: 6,751.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,871.15 : 12,242.26 = 4,892.40 : x
  2. Step 2: Convert to fraction form
    8,871.15/12,242.26 = 4,892.40/x
  3. Step 3: Cross multiply
    8,871.15x = 12,242.26 × 4,892.40
  4. Step 4: Simplify right side
    8,871.15x = 59,894,032.82
  5. Step 5: Solve for x
    x = 59,894,032.82/8,871.15
  6. Step 6: Final answer
    x = 6,751.55

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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.