Home / 1,908.12-2,631.85-1,162.13

Finding the Fourth Proportional to 1,908.12, 2,631.85 and 1,162.13

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Solution

The fourth proportional to 1,908.12, 2,631.85 and 1,162.13 is: 1,602.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,908.12 : 2,631.85 = 1,162.13 : x
  2. Step 2: Convert to fraction form
    1,908.12/2,631.85 = 1,162.13/x
  3. Step 3: Cross multiply
    1,908.12x = 2,631.85 × 1,162.13
  4. Step 4: Simplify right side
    1,908.12x = 3,058,535.78
  5. Step 5: Solve for x
    x = 3,058,535.78/1,908.12
  6. Step 6: Final answer
    x = 1,602.91

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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.