Home / 3,098.13-4,275.37-1,681.78

Finding the Fourth Proportional to 3,098.13, 4,275.37 and 1,681.78

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Solution

The fourth proportional to 3,098.13, 4,275.37 and 1,681.78 is: 2,320.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,098.13 : 4,275.37 = 1,681.78 : x
  2. Step 2: Convert to fraction form
    3,098.13/4,275.37 = 1,681.78/x
  3. Step 3: Cross multiply
    3,098.13x = 4,275.37 × 1,681.78
  4. Step 4: Simplify right side
    3,098.13x = 7,190,231.76
  5. Step 5: Solve for x
    x = 7,190,231.76/3,098.13
  6. Step 6: Final answer
    x = 2,320.83

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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.