Home / 1,855.20-2,557.16-1,357.92

Finding the Fourth Proportional to 1,855.20, 2,557.16 and 1,357.92

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Solution

The fourth proportional to 1,855.20, 2,557.16 and 1,357.92 is: 1,871.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,855.20 : 2,557.16 = 1,357.92 : x
  2. Step 2: Convert to fraction form
    1,855.20/2,557.16 = 1,357.92/x
  3. Step 3: Cross multiply
    1,855.20x = 2,557.16 × 1,357.92
  4. Step 4: Simplify right side
    1,855.20x = 3,472,418.71
  5. Step 5: Solve for x
    x = 3,472,418.71/1,855.20
  6. Step 6: Final answer
    x = 1,871.72

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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.