Home / 8,268.20-12,402.30-5,643.80

Finding the Fourth Proportional to 8,268.20, 12,402.30 and 5,643.80

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Solution

The fourth proportional to 8,268.20, 12,402.30 and 5,643.80 is: 8,465.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,268.20 : 12,402.30 = 5,643.80 : x
  2. Step 2: Convert to fraction form
    8,268.20/12,402.30 = 5,643.80/x
  3. Step 3: Cross multiply
    8,268.20x = 12,402.30 × 5,643.80
  4. Step 4: Simplify right side
    8,268.20x = 69,996,100.74
  5. Step 5: Solve for x
    x = 69,996,100.74/8,268.20
  6. Step 6: Final answer
    x = 8,465.70

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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.