Home / 2,869.13-3,960.05-1,690.58

Finding the Fourth Proportional to 2,869.13, 3,960.05 and 1,690.58

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Solution

The fourth proportional to 2,869.13, 3,960.05 and 1,690.58 is: 2,333.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,869.13 : 3,960.05 = 1,690.58 : x
  2. Step 2: Convert to fraction form
    2,869.13/3,960.05 = 1,690.58/x
  3. Step 3: Cross multiply
    2,869.13x = 3,960.05 × 1,690.58
  4. Step 4: Simplify right side
    2,869.13x = 6,694,753.08
  5. Step 5: Solve for x
    x = 6,694,753.08/2,869.13
  6. Step 6: Final answer
    x = 2,333.38

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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.