Home / 3,603.20-4,972.40-1,947.20

Finding the Fourth Proportional to 3,603.20, 4,972.40 and 1,947.20

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Solution

The fourth proportional to 3,603.20, 4,972.40 and 1,947.20 is: 2,687.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,603.20 : 4,972.40 = 1,947.20 : x
  2. Step 2: Convert to fraction form
    3,603.20/4,972.40 = 1,947.20/x
  3. Step 3: Cross multiply
    3,603.20x = 4,972.40 × 1,947.20
  4. Step 4: Simplify right side
    3,603.20x = 9,682,222.68
  5. Step 5: Solve for x
    x = 9,682,222.68/3,603.20
  6. Step 6: Final answer
    x = 2,687.12

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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.