Home / 2,781.95-4,173.49-1,138.63

Finding the Fourth Proportional to 2,781.95, 4,173.49 and 1,138.63

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Solution

The fourth proportional to 2,781.95, 4,173.49 and 1,138.63 is: 1,708.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,781.95 : 4,173.49 = 1,138.63 : x
  2. Step 2: Convert to fraction form
    2,781.95/4,173.49 = 1,138.63/x
  3. Step 3: Cross multiply
    2,781.95x = 4,173.49 × 1,138.63
  4. Step 4: Simplify right side
    2,781.95x = 4,752,058.07
  5. Step 5: Solve for x
    x = 4,752,058.07/2,781.95
  6. Step 6: Final answer
    x = 1,708.18

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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.