Home / 2,184.20-3,013.98-1,287.92

Finding the Fourth Proportional to 2,184.20, 3,013.98 and 1,287.92

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Solution

The fourth proportional to 2,184.20, 3,013.98 and 1,287.92 is: 1,777.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,184.20 : 3,013.98 = 1,287.92 : x
  2. Step 2: Convert to fraction form
    2,184.20/3,013.98 = 1,287.92/x
  3. Step 3: Cross multiply
    2,184.20x = 3,013.98 × 1,287.92
  4. Step 4: Simplify right side
    2,184.20x = 3,881,765.12
  5. Step 5: Solve for x
    x = 3,881,765.12/2,184.20
  6. Step 6: Final answer
    x = 1,777.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.