Home / 8,142.06-12,220.02-3,215.19

Finding the Fourth Proportional to 8,142.06, 12,220.02 and 3,215.19

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Solution

The fourth proportional to 8,142.06, 12,220.02 and 3,215.19 is: 4,825.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,142.06 : 12,220.02 = 3,215.19 : x
  2. Step 2: Convert to fraction form
    8,142.06/12,220.02 = 3,215.19/x
  3. Step 3: Cross multiply
    8,142.06x = 12,220.02 × 3,215.19
  4. Step 4: Simplify right side
    8,142.06x = 39,289,686.10
  5. Step 5: Solve for x
    x = 39,289,686.10/8,142.06
  6. Step 6: Final answer
    x = 4,825.52

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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.