Home / 7,117.30-9,822.06-3,930.76

Finding the Fourth Proportional to 7,117.30, 9,822.06 and 3,930.76

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Solution

The fourth proportional to 7,117.30, 9,822.06 and 3,930.76 is: 5,424.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,117.30 : 9,822.06 = 3,930.76 : x
  2. Step 2: Convert to fraction form
    7,117.30/9,822.06 = 3,930.76/x
  3. Step 3: Cross multiply
    7,117.30x = 9,822.06 × 3,930.76
  4. Step 4: Simplify right side
    7,117.30x = 38,608,160.57
  5. Step 5: Solve for x
    x = 38,608,160.57/7,117.30
  6. Step 6: Final answer
    x = 5,424.55

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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.