Home / 7,721.28-10,656.51-4,888.92

Finding the Fourth Proportional to 7,721.28, 10,656.51 and 4,888.92

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Solution

The fourth proportional to 7,721.28, 10,656.51 and 4,888.92 is: 6,747.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,721.28 : 10,656.51 = 4,888.92 : x
  2. Step 2: Convert to fraction form
    7,721.28/10,656.51 = 4,888.92/x
  3. Step 3: Cross multiply
    7,721.28x = 10,656.51 × 4,888.92
  4. Step 4: Simplify right side
    7,721.28x = 52,098,804.34
  5. Step 5: Solve for x
    x = 52,098,804.34/7,721.28
  6. Step 6: Final answer
    x = 6,747.43

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Double scale
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Similar ratio
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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.