Home / 7,117.92-9,822.73-3,974.10

Finding the Fourth Proportional to 7,117.92, 9,822.73 and 3,974.10

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Solution

The fourth proportional to 7,117.92, 9,822.73 and 3,974.10 is: 5,484.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,117.92 : 9,822.73 = 3,974.10 : x
  2. Step 2: Convert to fraction form
    7,117.92/9,822.73 = 3,974.10/x
  3. Step 3: Cross multiply
    7,117.92x = 9,822.73 × 3,974.10
  4. Step 4: Simplify right side
    7,117.92x = 39,036,511.29
  5. Step 5: Solve for x
    x = 39,036,511.29/7,117.92
  6. Step 6: Final answer
    x = 5,484.26

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Half 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.