Home / 6,721.92-9,269.88-5,125.78

Finding the Fourth Proportional to 6,721.92, 9,269.88 and 5,125.78

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Solution

The fourth proportional to 6,721.92, 9,269.88 and 5,125.78 is: 7,068.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,721.92 : 9,269.88 = 5,125.78 : x
  2. Step 2: Convert to fraction form
    6,721.92/9,269.88 = 5,125.78/x
  3. Step 3: Cross multiply
    6,721.92x = 9,269.88 × 5,125.78
  4. Step 4: Simplify right side
    6,721.92x = 47,515,357.87
  5. Step 5: Solve for x
    x = 47,515,357.87/6,721.92
  6. Step 6: Final answer
    x = 7,068.72

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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.