Home / 1,780.74-2,458.30-1,357.62

Finding the Fourth Proportional to 1,780.74, 2,458.30 and 1,357.62

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Solution

The fourth proportional to 1,780.74, 2,458.30 and 1,357.62 is: 1,874.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,780.74 : 2,458.30 = 1,357.62 : x
  2. Step 2: Convert to fraction form
    1,780.74/2,458.30 = 1,357.62/x
  3. Step 3: Cross multiply
    1,780.74x = 2,458.30 × 1,357.62
  4. Step 4: Simplify right side
    1,780.74x = 3,337,421.56
  5. Step 5: Solve for x
    x = 3,337,421.56/1,780.74
  6. Step 6: Final answer
    x = 1,874.18

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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.