Home / 2,088.78-3,129.26-1,047.57

Finding the Fourth Proportional to 2,088.78, 3,129.26 and 1,047.57

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Solution

The fourth proportional to 2,088.78, 3,129.26 and 1,047.57 is: 1,569.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,088.78 : 3,129.26 = 1,047.57 : x
  2. Step 2: Convert to fraction form
    2,088.78/3,129.26 = 1,047.57/x
  3. Step 3: Cross multiply
    2,088.78x = 3,129.26 × 1,047.57
  4. Step 4: Simplify right side
    2,088.78x = 3,278,103.25
  5. Step 5: Solve for x
    x = 3,278,103.25/2,088.78
  6. Step 6: Final answer
    x = 1,569.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.