Home / 2,613.62-3,920.40-1,053.20

Finding the Fourth Proportional to 2,613.62, 3,920.40 and 1,053.20

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Solution

The fourth proportional to 2,613.62, 3,920.40 and 1,053.20 is: 1,579.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,613.62 : 3,920.40 = 1,053.20 : x
  2. Step 2: Convert to fraction form
    2,613.62/3,920.40 = 1,053.20/x
  3. Step 3: Cross multiply
    2,613.62x = 3,920.40 × 1,053.20
  4. Step 4: Simplify right side
    2,613.62x = 4,128,965.28
  5. Step 5: Solve for x
    x = 4,128,965.28/2,613.62
  6. Step 6: Final answer
    x = 1,579.79

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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.