Home / 3,461.28-5,191.65-1,121.19

Finding the Fourth Proportional to 3,461.28, 5,191.65 and 1,121.19

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Solution

The fourth proportional to 3,461.28, 5,191.65 and 1,121.19 is: 1,681.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,461.28 : 5,191.65 = 1,121.19 : x
  2. Step 2: Convert to fraction form
    3,461.28/5,191.65 = 1,121.19/x
  3. Step 3: Cross multiply
    3,461.28x = 5,191.65 × 1,121.19
  4. Step 4: Simplify right side
    3,461.28x = 5,820,826.06
  5. Step 5: Solve for x
    x = 5,820,826.06/3,461.28
  6. Step 6: Final answer
    x = 1,681.70

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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.