Home / 3,397.55-4,689.09-1,981.69

Finding the Fourth Proportional to 3,397.55, 4,689.09 and 1,981.69

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Solution

The fourth proportional to 3,397.55, 4,689.09 and 1,981.69 is: 2,735.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,397.55 : 4,689.09 = 1,981.69 : x
  2. Step 2: Convert to fraction form
    3,397.55/4,689.09 = 1,981.69/x
  3. Step 3: Cross multiply
    3,397.55x = 4,689.09 × 1,981.69
  4. Step 4: Simplify right side
    3,397.55x = 9,292,311.04
  5. Step 5: Solve for x
    x = 9,292,311.04/3,397.55
  6. Step 6: Final answer
    x = 2,735.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.