Home / 1,543.14-2,129.53-844.51

Finding the Fourth Proportional to 1,543.14, 2,129.53 and 844.51

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Solution

The fourth proportional to 1,543.14, 2,129.53 and 844.51 is: 1,165.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,543.14 : 2,129.53 = 844.51 : x
  2. Step 2: Convert to fraction form
    1,543.14/2,129.53 = 844.51/x
  3. Step 3: Cross multiply
    1,543.14x = 2,129.53 × 844.51
  4. Step 4: Simplify right side
    1,543.14x = 1,798,407.27
  5. Step 5: Solve for x
    x = 1,798,407.27/1,543.14
  6. Step 6: Final answer
    x = 1,165.42

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1.5x scale

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.