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Finding the Fourth Proportional to 7,877.58, 10,869.18 and 4,474.42

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Solution

The fourth proportional to 7,877.58, 10,869.18 and 4,474.42 is: 6,173.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,877.58 : 10,869.18 = 4,474.42 : x
  2. Step 2: Convert to fraction form
    7,877.58/10,869.18 = 4,474.42/x
  3. Step 3: Cross multiply
    7,877.58x = 10,869.18 × 4,474.42
  4. Step 4: Simplify right side
    7,877.58x = 48,633,276.38
  5. Step 5: Solve for x
    x = 48,633,276.38/7,877.58
  6. Step 6: Final answer
    x = 6,173.63

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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.