Home / 1,983.57-2,736.13-1,275.18

Finding the Fourth Proportional to 1,983.57, 2,736.13 and 1,275.18

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Solution

The fourth proportional to 1,983.57, 2,736.13 and 1,275.18 is: 1,758.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,983.57 : 2,736.13 = 1,275.18 : x
  2. Step 2: Convert to fraction form
    1,983.57/2,736.13 = 1,275.18/x
  3. Step 3: Cross multiply
    1,983.57x = 2,736.13 × 1,275.18
  4. Step 4: Simplify right side
    1,983.57x = 3,489,058.25
  5. Step 5: Solve for x
    x = 3,489,058.25/1,983.57
  6. Step 6: Final answer
    x = 1,758.98

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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.