Home / 3,102.40-4,281.19-1,923.45

Finding the Fourth Proportional to 3,102.40, 4,281.19 and 1,923.45

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Solution

The fourth proportional to 3,102.40, 4,281.19 and 1,923.45 is: 2,654.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,102.40 : 4,281.19 = 1,923.45 : x
  2. Step 2: Convert to fraction form
    3,102.40/4,281.19 = 1,923.45/x
  3. Step 3: Cross multiply
    3,102.40x = 4,281.19 × 1,923.45
  4. Step 4: Simplify right side
    3,102.40x = 8,234,654.91
  5. Step 5: Solve for x
    x = 8,234,654.91/3,102.40
  6. Step 6: Final answer
    x = 2,654.29

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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.