Home / 1,543.32-2,128.14-1,227.96

Finding the Fourth Proportional to 1,543.32, 2,128.14 and 1,227.96

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Solution

The fourth proportional to 1,543.32, 2,128.14 and 1,227.96 is: 1,693.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,543.32 : 2,128.14 = 1,227.96 : x
  2. Step 2: Convert to fraction form
    1,543.32/2,128.14 = 1,227.96/x
  3. Step 3: Cross multiply
    1,543.32x = 2,128.14 × 1,227.96
  4. Step 4: Simplify right side
    1,543.32x = 2,613,270.79
  5. Step 5: Solve for x
    x = 2,613,270.79/1,543.32
  6. Step 6: Final answer
    x = 1,693.28

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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.