Home / 1,277.02-1,761.30-1,172.44

Finding the Fourth Proportional to 1,277.02, 1,761.30 and 1,172.44

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Solution

The fourth proportional to 1,277.02, 1,761.30 and 1,172.44 is: 1,617.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,277.02 : 1,761.30 = 1,172.44 : x
  2. Step 2: Convert to fraction form
    1,277.02/1,761.30 = 1,172.44/x
  3. Step 3: Cross multiply
    1,277.02x = 1,761.30 × 1,172.44
  4. Step 4: Simplify right side
    1,277.02x = 2,065,018.57
  5. Step 5: Solve for x
    x = 2,065,018.57/1,277.02
  6. Step 6: Final answer
    x = 1,617.06

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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.