Home / 1,502.20-2,252.22-771.18

Finding the Fourth Proportional to 1,502.20, 2,252.22 and 771.18

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Solution

The fourth proportional to 1,502.20, 2,252.22 and 771.18 is: 1,156.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,502.20 : 2,252.22 = 771.18 : x
  2. Step 2: Convert to fraction form
    1,502.20/2,252.22 = 771.18/x
  3. Step 3: Cross multiply
    1,502.20x = 2,252.22 × 771.18
  4. Step 4: Simplify right side
    1,502.20x = 1,736,867.02
  5. Step 5: Solve for x
    x = 1,736,867.02/1,502.20
  6. Step 6: Final answer
    x = 1,156.22

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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.