Home / 1,543.10-2,130.17-1,072.58

Finding the Fourth Proportional to 1,543.10, 2,130.17 and 1,072.58

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Solution

The fourth proportional to 1,543.10, 2,130.17 and 1,072.58 is: 1,480.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,543.10 : 2,130.17 = 1,072.58 : x
  2. Step 2: Convert to fraction form
    1,543.10/2,130.17 = 1,072.58/x
  3. Step 3: Cross multiply
    1,543.10x = 2,130.17 × 1,072.58
  4. Step 4: Simplify right side
    1,543.10x = 2,284,761.72
  5. Step 5: Solve for x
    x = 2,284,761.72/1,543.10
  6. Step 6: Final answer
    x = 1,480.64

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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.