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Finding the Fourth Proportional to 9,114.79, 13,672.48 and 2,874.86

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Solution

The fourth proportional to 9,114.79, 13,672.48 and 2,874.86 is: 4,312.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,114.79 : 13,672.48 = 2,874.86 : x
  2. Step 2: Convert to fraction form
    9,114.79/13,672.48 = 2,874.86/x
  3. Step 3: Cross multiply
    9,114.79x = 13,672.48 × 2,874.86
  4. Step 4: Simplify right side
    9,114.79x = 39,306,465.85
  5. Step 5: Solve for x
    x = 39,306,465.85/9,114.79
  6. Step 6: Final answer
    x = 4,312.38

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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.