Home / 1,245.06-1,862.64-1,039.95

Finding the Fourth Proportional to 1,245.06, 1,862.64 and 1,039.95

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Solution

The fourth proportional to 1,245.06, 1,862.64 and 1,039.95 is: 1,555.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245.06 : 1,862.64 = 1,039.95 : x
  2. Step 2: Convert to fraction form
    1,245.06/1,862.64 = 1,039.95/x
  3. Step 3: Cross multiply
    1,245.06x = 1,862.64 × 1,039.95
  4. Step 4: Simplify right side
    1,245.06x = 1,937,052.47
  5. Step 5: Solve for x
    x = 1,937,052.47/1,245.06
  6. Step 6: Final answer
    x = 1,555.79

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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.