Home / 3,713.31-5,124.68-2,120.45

Finding the Fourth Proportional to 3,713.31, 5,124.68 and 2,120.45

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Solution

The fourth proportional to 3,713.31, 5,124.68 and 2,120.45 is: 2,926.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,713.31 : 5,124.68 = 2,120.45 : x
  2. Step 2: Convert to fraction form
    3,713.31/5,124.68 = 2,120.45/x
  3. Step 3: Cross multiply
    3,713.31x = 5,124.68 × 2,120.45
  4. Step 4: Simplify right side
    3,713.31x = 10,866,627.71
  5. Step 5: Solve for x
    x = 10,866,627.71/3,713.31
  6. Step 6: Final answer
    x = 2,926.40

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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.