Home / 3,101.91-4,280.61-1,685.59

Finding the Fourth Proportional to 3,101.91, 4,280.61 and 1,685.59

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Solution

The fourth proportional to 3,101.91, 4,280.61 and 1,685.59 is: 2,326.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,101.91 : 4,280.61 = 1,685.59 : x
  2. Step 2: Convert to fraction form
    3,101.91/4,280.61 = 1,685.59/x
  3. Step 3: Cross multiply
    3,101.91x = 4,280.61 × 1,685.59
  4. Step 4: Simplify right side
    3,101.91x = 7,215,332.01
  5. Step 5: Solve for x
    x = 7,215,332.01/3,101.91
  6. Step 6: Final answer
    x = 2,326.10

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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.