Home / 3,712.40-5,126.56-2,388.42

Finding the Fourth Proportional to 3,712.40, 5,126.56 and 2,388.42

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Solution

The fourth proportional to 3,712.40, 5,126.56 and 2,388.42 is: 3,298.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,712.40 : 5,126.56 = 2,388.42 : x
  2. Step 2: Convert to fraction form
    3,712.40/5,126.56 = 2,388.42/x
  3. Step 3: Cross multiply
    3,712.40x = 5,126.56 × 2,388.42
  4. Step 4: Simplify right side
    3,712.40x = 12,244,378.44
  5. Step 5: Solve for x
    x = 12,244,378.44/3,712.40
  6. Step 6: Final answer
    x = 3,298.24

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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.