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Finding the Fourth Proportional to 2,275.65, 3,411.45 and 889.92

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Solution

The fourth proportional to 2,275.65, 3,411.45 and 889.92 is: 1,334.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,275.65 : 3,411.45 = 889.92 : x
  2. Step 2: Convert to fraction form
    2,275.65/3,411.45 = 889.92/x
  3. Step 3: Cross multiply
    2,275.65x = 3,411.45 × 889.92
  4. Step 4: Simplify right side
    2,275.65x = 3,035,917.58
  5. Step 5: Solve for x
    x = 3,035,917.58/2,275.65
  6. Step 6: Final answer
    x = 1,334.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.