Home / 1,952.18-2,691.96-1,288.20

Finding the Fourth Proportional to 1,952.18, 2,691.96 and 1,288.20

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Solution

The fourth proportional to 1,952.18, 2,691.96 and 1,288.20 is: 1,776.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,952.18 : 2,691.96 = 1,288.20 : x
  2. Step 2: Convert to fraction form
    1,952.18/2,691.96 = 1,288.20/x
  3. Step 3: Cross multiply
    1,952.18x = 2,691.96 × 1,288.20
  4. Step 4: Simplify right side
    1,952.18x = 3,467,782.87
  5. Step 5: Solve for x
    x = 3,467,782.87/1,952.18
  6. Step 6: Final answer
    x = 1,776.36

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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.