Home / 2,521.28-3,765.78-2,001.88

Finding the Fourth Proportional to 2,521.28, 3,765.78 and 2,001.88

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Solution

The fourth proportional to 2,521.28, 3,765.78 and 2,001.88 is: 2,990.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,521.28 : 3,765.78 = 2,001.88 : x
  2. Step 2: Convert to fraction form
    2,521.28/3,765.78 = 2,001.88/x
  3. Step 3: Cross multiply
    2,521.28x = 3,765.78 × 2,001.88
  4. Step 4: Simplify right side
    2,521.28x = 7,538,639.67
  5. Step 5: Solve for x
    x = 7,538,639.67/2,521.28
  6. Step 6: Final answer
    x = 2,990.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.