Home / 2,422.16-3,630.40-1,120.88

Finding the Fourth Proportional to 2,422.16, 3,630.40 and 1,120.88

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Solution

The fourth proportional to 2,422.16, 3,630.40 and 1,120.88 is: 1,680.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,422.16 : 3,630.40 = 1,120.88 : x
  2. Step 2: Convert to fraction form
    2,422.16/3,630.40 = 1,120.88/x
  3. Step 3: Cross multiply
    2,422.16x = 3,630.40 × 1,120.88
  4. Step 4: Simplify right side
    2,422.16x = 4,069,242.75
  5. Step 5: Solve for x
    x = 4,069,242.75/2,422.16
  6. Step 6: Final answer
    x = 1,680.01

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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.