Home / 1,506.22-2,257.40-813.20

Finding the Fourth Proportional to 1,506.22, 2,257.40 and 813.20

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Solution

The fourth proportional to 1,506.22, 2,257.40 and 813.20 is: 1,218.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,506.22 : 2,257.40 = 813.20 : x
  2. Step 2: Convert to fraction form
    1,506.22/2,257.40 = 813.20/x
  3. Step 3: Cross multiply
    1,506.22x = 2,257.40 × 813.20
  4. Step 4: Simplify right side
    1,506.22x = 1,835,717.68
  5. Step 5: Solve for x
    x = 1,835,717.68/1,506.22
  6. Step 6: Final answer
    x = 1,218.76

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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.