Home / 2,117.02-3,175.53-1,147.45

Finding the Fourth Proportional to 2,117.02, 3,175.53 and 1,147.45

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Solution

The fourth proportional to 2,117.02, 3,175.53 and 1,147.45 is: 1,721.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,117.02 : 3,175.53 = 1,147.45 : x
  2. Step 2: Convert to fraction form
    2,117.02/3,175.53 = 1,147.45/x
  3. Step 3: Cross multiply
    2,117.02x = 3,175.53 × 1,147.45
  4. Step 4: Simplify right side
    2,117.02x = 3,643,761.90
  5. Step 5: Solve for x
    x = 3,643,761.90/2,117.02
  6. Step 6: Final answer
    x = 1,721.18

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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.