Home / 6,514.40-8,987.68-4,157.90

Finding the Fourth Proportional to 6,514.40, 8,987.68 and 4,157.90

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Solution

The fourth proportional to 6,514.40, 8,987.68 and 4,157.90 is: 5,736.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,514.40 : 8,987.68 = 4,157.90 : x
  2. Step 2: Convert to fraction form
    6,514.40/8,987.68 = 4,157.90/x
  3. Step 3: Cross multiply
    6,514.40x = 8,987.68 × 4,157.90
  4. Step 4: Simplify right side
    6,514.40x = 37,369,874.67
  5. Step 5: Solve for x
    x = 37,369,874.67/6,514.40
  6. Step 6: Final answer
    x = 5,736.50

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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.