Home / 3,712.19-5,123.11-2,118.47

Finding the Fourth Proportional to 3,712.19, 5,123.11 and 2,118.47

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Solution

The fourth proportional to 3,712.19, 5,123.11 and 2,118.47 is: 2,923.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,712.19 : 5,123.11 = 2,118.47 : x
  2. Step 2: Convert to fraction form
    3,712.19/5,123.11 = 2,118.47/x
  3. Step 3: Cross multiply
    3,712.19x = 5,123.11 × 2,118.47
  4. Step 4: Simplify right side
    3,712.19x = 10,853,129.23
  5. Step 5: Solve for x
    x = 10,853,129.23/3,712.19
  6. Step 6: Final answer
    x = 2,923.65

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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.