Home / 1,543.16-2,127.66-1,128.44

Finding the Fourth Proportional to 1,543.16, 2,127.66 and 1,128.44

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Solution

The fourth proportional to 1,543.16, 2,127.66 and 1,128.44 is: 1,555.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,543.16 : 2,127.66 = 1,128.44 : x
  2. Step 2: Convert to fraction form
    1,543.16/2,127.66 = 1,128.44/x
  3. Step 3: Cross multiply
    1,543.16x = 2,127.66 × 1,128.44
  4. Step 4: Simplify right side
    1,543.16x = 2,400,936.65
  5. Step 5: Solve for x
    x = 2,400,936.65/1,543.16
  6. Step 6: Final answer
    x = 1,555.86

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.