Home / 3,724.90-5,139.65-2,398.34

Finding the Fourth Proportional to 3,724.90, 5,139.65 and 2,398.34

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Solution

The fourth proportional to 3,724.90, 5,139.65 and 2,398.34 is: 3,309.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,724.90 : 5,139.65 = 2,398.34 : x
  2. Step 2: Convert to fraction form
    3,724.90/5,139.65 = 2,398.34/x
  3. Step 3: Cross multiply
    3,724.90x = 5,139.65 × 2,398.34
  4. Step 4: Simplify right side
    3,724.90x = 12,326,628.18
  5. Step 5: Solve for x
    x = 12,326,628.18/3,724.90
  6. Step 6: Final answer
    x = 3,309.25

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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.