Home / 7,876.49-10,869.63-4,339.78

Finding the Fourth Proportional to 7,876.49, 10,869.63 and 4,339.78

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Solution

The fourth proportional to 7,876.49, 10,869.63 and 4,339.78 is: 5,988.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,876.49 : 10,869.63 = 4,339.78 : x
  2. Step 2: Convert to fraction form
    7,876.49/10,869.63 = 4,339.78/x
  3. Step 3: Cross multiply
    7,876.49x = 10,869.63 × 4,339.78
  4. Step 4: Simplify right side
    7,876.49x = 47,171,759.43
  5. Step 5: Solve for x
    x = 47,171,759.43/7,876.49
  6. Step 6: Final answer
    x = 5,988.94

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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.