Home / 8,419.68-12,630.29-4,257.09

Finding the Fourth Proportional to 8,419.68, 12,630.29 and 4,257.09

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Solution

The fourth proportional to 8,419.68, 12,630.29 and 4,257.09 is: 6,386.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,419.68 : 12,630.29 = 4,257.09 : x
  2. Step 2: Convert to fraction form
    8,419.68/12,630.29 = 4,257.09/x
  3. Step 3: Cross multiply
    8,419.68x = 12,630.29 × 4,257.09
  4. Step 4: Simplify right side
    8,419.68x = 53,768,259.97
  5. Step 5: Solve for x
    x = 53,768,259.97/8,419.68
  6. Step 6: Final answer
    x = 6,386.02

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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.