Home / 7,876.24-10,869.39-4,339.78

Finding the Fourth Proportional to 7,876.24, 10,869.39 and 4,339.78

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Solution

The fourth proportional to 7,876.24, 10,869.39 and 4,339.78 is: 5,988.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,876.24 : 10,869.39 = 4,339.78 : x
  2. Step 2: Convert to fraction form
    7,876.24/10,869.39 = 4,339.78/x
  3. Step 3: Cross multiply
    7,876.24x = 10,869.39 × 4,339.78
  4. Step 4: Simplify right side
    7,876.24x = 47,170,734.16
  5. Step 5: Solve for x
    x = 47,170,734.16/7,876.24
  6. Step 6: Final answer
    x = 5,988.99

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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.