Home / 3,987.36-5,503.68-2,590.56

Finding the Fourth Proportional to 3,987.36, 5,503.68 and 2,590.56

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Solution

The fourth proportional to 3,987.36, 5,503.68 and 2,590.56 is: 3,575.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,987.36 : 5,503.68 = 2,590.56 : x
  2. Step 2: Convert to fraction form
    3,987.36/5,503.68 = 2,590.56/x
  3. Step 3: Cross multiply
    3,987.36x = 5,503.68 × 2,590.56
  4. Step 4: Simplify right side
    3,987.36x = 14,257,613.26
  5. Step 5: Solve for x
    x = 14,257,613.26/3,987.36
  6. Step 6: Final answer
    x = 3,575.70

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1.5x scale

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.