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Finding the Fourth Proportional to 7,876.17, 10,869.03 and 4,339.53

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Solution

The fourth proportional to 7,876.17, 10,869.03 and 4,339.53 is: 5,988.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,876.17 : 10,869.03 = 4,339.53 : x
  2. Step 2: Convert to fraction form
    7,876.17/10,869.03 = 4,339.53/x
  3. Step 3: Cross multiply
    7,876.17x = 10,869.03 × 4,339.53
  4. Step 4: Simplify right side
    7,876.17x = 47,166,481.76
  5. Step 5: Solve for x
    x = 47,166,481.76/7,876.17
  6. Step 6: Final answer
    x = 5,988.50

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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.