Home / 6,371.92-9,557.88-1,989.72

Finding the Fourth Proportional to 6,371.92, 9,557.88 and 1,989.72

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Solution

The fourth proportional to 6,371.92, 9,557.88 and 1,989.72 is: 2,984.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,371.92 : 9,557.88 = 1,989.72 : x
  2. Step 2: Convert to fraction form
    6,371.92/9,557.88 = 1,989.72/x
  3. Step 3: Cross multiply
    6,371.92x = 9,557.88 × 1,989.72
  4. Step 4: Simplify right side
    6,371.92x = 19,017,504.99
  5. Step 5: Solve for x
    x = 19,017,504.99/6,371.92
  6. Step 6: Final answer
    x = 2,984.58

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.