Home / 3,461.28-5,191.80-864.18

Finding the Fourth Proportional to 3,461.28, 5,191.80 and 864.18

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Solution

The fourth proportional to 3,461.28, 5,191.80 and 864.18 is: 1,296.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,461.28 : 5,191.80 = 864.18 : x
  2. Step 2: Convert to fraction form
    3,461.28/5,191.80 = 864.18/x
  3. Step 3: Cross multiply
    3,461.28x = 5,191.80 × 864.18
  4. Step 4: Simplify right side
    3,461.28x = 4,486,649.72
  5. Step 5: Solve for x
    x = 4,486,649.72/3,461.28
  6. Step 6: Final answer
    x = 1,296.24

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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.