Home / 1,534.35-2,117.25-871.29

Finding the Fourth Proportional to 1,534.35, 2,117.25 and 871.29

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Solution

The fourth proportional to 1,534.35, 2,117.25 and 871.29 is: 1,202.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,534.35 : 2,117.25 = 871.29 : x
  2. Step 2: Convert to fraction form
    1,534.35/2,117.25 = 871.29/x
  3. Step 3: Cross multiply
    1,534.35x = 2,117.25 × 871.29
  4. Step 4: Simplify right side
    1,534.35x = 1,844,738.75
  5. Step 5: Solve for x
    x = 1,844,738.75/1,534.35
  6. Step 6: Final answer
    x = 1,202.29

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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.