Home / 3,123.50-4,310.48-1,726.25

Finding the Fourth Proportional to 3,123.50, 4,310.48 and 1,726.25

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Solution

The fourth proportional to 3,123.50, 4,310.48 and 1,726.25 is: 2,382.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,123.50 : 4,310.48 = 1,726.25 : x
  2. Step 2: Convert to fraction form
    3,123.50/4,310.48 = 1,726.25/x
  3. Step 3: Cross multiply
    3,123.50x = 4,310.48 × 1,726.25
  4. Step 4: Simplify right side
    3,123.50x = 7,440,966.10
  5. Step 5: Solve for x
    x = 7,440,966.10/3,123.50
  6. Step 6: Final answer
    x = 2,382.25

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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.