Home / 2,869.62-3,959.59-1,690.92

Finding the Fourth Proportional to 2,869.62, 3,959.59 and 1,690.92

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Solution

The fourth proportional to 2,869.62, 3,959.59 and 1,690.92 is: 2,333.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,869.62 : 3,959.59 = 1,690.92 : x
  2. Step 2: Convert to fraction form
    2,869.62/3,959.59 = 1,690.92/x
  3. Step 3: Cross multiply
    2,869.62x = 3,959.59 × 1,690.92
  4. Step 4: Simplify right side
    2,869.62x = 6,695,341.47
  5. Step 5: Solve for x
    x = 6,695,341.47/2,869.62
  6. Step 6: Final answer
    x = 2,333.18

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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.