Home / 1,299.06-1,947.36-432.75

Finding the Fourth Proportional to 1,299.06, 1,947.36 and 432.75

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Solution

The fourth proportional to 1,299.06, 1,947.36 and 432.75 is: 648.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,299.06 : 1,947.36 = 432.75 : x
  2. Step 2: Convert to fraction form
    1,299.06/1,947.36 = 432.75/x
  3. Step 3: Cross multiply
    1,299.06x = 1,947.36 × 432.75
  4. Step 4: Simplify right side
    1,299.06x = 842,720.04
  5. Step 5: Solve for x
    x = 842,720.04/1,299.06
  6. Step 6: Final answer
    x = 648.72

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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.