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Finding the Fourth Proportional to 7,876.93, 10,869.24 and 4,519.21

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Solution

The fourth proportional to 7,876.93, 10,869.24 and 4,519.21 is: 6,235.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,876.93 : 10,869.24 = 4,519.21 : x
  2. Step 2: Convert to fraction form
    7,876.93/10,869.24 = 4,519.21/x
  3. Step 3: Cross multiply
    7,876.93x = 10,869.24 × 4,519.21
  4. Step 4: Simplify right side
    7,876.93x = 49,120,378.10
  5. Step 5: Solve for x
    x = 49,120,378.10/7,876.93
  6. Step 6: Final answer
    x = 6,235.98

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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.