Home / 2,166.28-2,989.54-1,234.76

Finding the Fourth Proportional to 2,166.28, 2,989.54 and 1,234.76

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Solution

The fourth proportional to 2,166.28, 2,989.54 and 1,234.76 is: 1,704.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,166.28 : 2,989.54 = 1,234.76 : x
  2. Step 2: Convert to fraction form
    2,166.28/2,989.54 = 1,234.76/x
  3. Step 3: Cross multiply
    2,166.28x = 2,989.54 × 1,234.76
  4. Step 4: Simplify right side
    2,166.28x = 3,691,364.41
  5. Step 5: Solve for x
    x = 3,691,364.41/2,166.28
  6. Step 6: Final answer
    x = 1,704.01

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Half scale
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Double scale
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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.