Home / 1,296.30-1,947.15-1,250.40

Finding the Fourth Proportional to 1,296.30, 1,947.15 and 1,250.40

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Solution

The fourth proportional to 1,296.30, 1,947.15 and 1,250.40 is: 1,878.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,296.30 : 1,947.15 = 1,250.40 : x
  2. Step 2: Convert to fraction form
    1,296.30/1,947.15 = 1,250.40/x
  3. Step 3: Cross multiply
    1,296.30x = 1,947.15 × 1,250.40
  4. Step 4: Simplify right side
    1,296.30x = 2,434,716.36
  5. Step 5: Solve for x
    x = 2,434,716.36/1,296.30
  6. Step 6: Final answer
    x = 1,878.20

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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.