Home / 3,123.90-4,305.05-2,238.16

Finding the Fourth Proportional to 3,123.90, 4,305.05 and 2,238.16

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Solution

The fourth proportional to 3,123.90, 4,305.05 and 2,238.16 is: 3,084.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,123.90 : 4,305.05 = 2,238.16 : x
  2. Step 2: Convert to fraction form
    3,123.90/4,305.05 = 2,238.16/x
  3. Step 3: Cross multiply
    3,123.90x = 4,305.05 × 2,238.16
  4. Step 4: Simplify right side
    3,123.90x = 9,635,390.71
  5. Step 5: Solve for x
    x = 9,635,390.71/3,123.90
  6. Step 6: Final answer
    x = 3,084.41

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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.