Home / 2,972.24-4,454.50-1,215.20

Finding the Fourth Proportional to 2,972.24, 4,454.50 and 1,215.20

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Solution

The fourth proportional to 2,972.24, 4,454.50 and 1,215.20 is: 1,821.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,972.24 : 4,454.50 = 1,215.20 : x
  2. Step 2: Convert to fraction form
    2,972.24/4,454.50 = 1,215.20/x
  3. Step 3: Cross multiply
    2,972.24x = 4,454.50 × 1,215.20
  4. Step 4: Simplify right side
    2,972.24x = 5,413,108.40
  5. Step 5: Solve for x
    x = 5,413,108.40/2,972.24
  6. Step 6: Final answer
    x = 1,821.22

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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.