Home / 8,085.20-12,127.80-2,242.40

Finding the Fourth Proportional to 8,085.20, 12,127.80 and 2,242.40

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Solution

The fourth proportional to 8,085.20, 12,127.80 and 2,242.40 is: 3,363.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,085.20 : 12,127.80 = 2,242.40 : x
  2. Step 2: Convert to fraction form
    8,085.20/12,127.80 = 2,242.40/x
  3. Step 3: Cross multiply
    8,085.20x = 12,127.80 × 2,242.40
  4. Step 4: Simplify right side
    8,085.20x = 27,195,378.72
  5. Step 5: Solve for x
    x = 27,195,378.72/8,085.20
  6. Step 6: Final answer
    x = 3,363.60

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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.