Home / 2,557.55-3,836.87-1,387.51

Finding the Fourth Proportional to 2,557.55, 3,836.87 and 1,387.51

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Solution

The fourth proportional to 2,557.55, 3,836.87 and 1,387.51 is: 2,081.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,557.55 : 3,836.87 = 1,387.51 : x
  2. Step 2: Convert to fraction form
    2,557.55/3,836.87 = 1,387.51/x
  3. Step 3: Cross multiply
    2,557.55x = 3,836.87 × 1,387.51
  4. Step 4: Simplify right side
    2,557.55x = 5,323,695.49
  5. Step 5: Solve for x
    x = 5,323,695.49/2,557.55
  6. Step 6: Final answer
    x = 2,081.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.