Home / 3,987.12-5,503.50-2,590.14

Finding the Fourth Proportional to 3,987.12, 5,503.50 and 2,590.14

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Solution

The fourth proportional to 3,987.12, 5,503.50 and 2,590.14 is: 3,575.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,987.12 : 5,503.50 = 2,590.14 : x
  2. Step 2: Convert to fraction form
    3,987.12/5,503.50 = 2,590.14/x
  3. Step 3: Cross multiply
    3,987.12x = 5,503.50 × 2,590.14
  4. Step 4: Simplify right side
    3,987.12x = 14,254,835.49
  5. Step 5: Solve for x
    x = 14,254,835.49/3,987.12
  6. Step 6: Final answer
    x = 3,575.22

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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.