Home / 3,724.19-5,139.38-2,152.28

Finding the Fourth Proportional to 3,724.19, 5,139.38 and 2,152.28

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Solution

The fourth proportional to 3,724.19, 5,139.38 and 2,152.28 is: 2,970.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,724.19 : 5,139.38 = 2,152.28 : x
  2. Step 2: Convert to fraction form
    3,724.19/5,139.38 = 2,152.28/x
  3. Step 3: Cross multiply
    3,724.19x = 5,139.38 × 2,152.28
  4. Step 4: Simplify right side
    3,724.19x = 11,061,384.79
  5. Step 5: Solve for x
    x = 11,061,384.79/3,724.19
  6. Step 6: Final answer
    x = 2,970.15

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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.