Home / 1,225.12-1,839.24-1,022.20

Finding the Fourth Proportional to 1,225.12, 1,839.24 and 1,022.20

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Solution

The fourth proportional to 1,225.12, 1,839.24 and 1,022.20 is: 1,534.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,225.12 : 1,839.24 = 1,022.20 : x
  2. Step 2: Convert to fraction form
    1,225.12/1,839.24 = 1,022.20/x
  3. Step 3: Cross multiply
    1,225.12x = 1,839.24 × 1,022.20
  4. Step 4: Simplify right side
    1,225.12x = 1,880,071.13
  5. Step 5: Solve for x
    x = 1,880,071.13/1,225.12
  6. Step 6: Final answer
    x = 1,534.60

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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.