Home / 1,034.02-1,427.60-719.20

Finding the Fourth Proportional to 1,034.02, 1,427.60 and 719.20

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Solution

The fourth proportional to 1,034.02, 1,427.60 and 719.20 is: 992.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,034.02 : 1,427.60 = 719.20 : x
  2. Step 2: Convert to fraction form
    1,034.02/1,427.60 = 719.20/x
  3. Step 3: Cross multiply
    1,034.02x = 1,427.60 × 719.20
  4. Step 4: Simplify right side
    1,034.02x = 1,026,729.92
  5. Step 5: Solve for x
    x = 1,026,729.92/1,034.02
  6. Step 6: Final answer
    x = 992.95

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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.