Home / 8,659.10-12,987.95-2,418.59

Finding the Fourth Proportional to 8,659.10, 12,987.95 and 2,418.59

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Solution

The fourth proportional to 8,659.10, 12,987.95 and 2,418.59 is: 3,627.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,659.10 : 12,987.95 = 2,418.59 : x
  2. Step 2: Convert to fraction form
    8,659.10/12,987.95 = 2,418.59/x
  3. Step 3: Cross multiply
    8,659.10x = 12,987.95 × 2,418.59
  4. Step 4: Simplify right side
    8,659.10x = 31,412,546.37
  5. Step 5: Solve for x
    x = 31,412,546.37/8,659.10
  6. Step 6: Final answer
    x = 3,627.69

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1.5x scale

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.