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Finding the Fourth Proportional to 2,763.39, 4,145.75 and 914.51

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Solution

The fourth proportional to 2,763.39, 4,145.75 and 914.51 is: 1,371.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,763.39 : 4,145.75 = 914.51 : x
  2. Step 2: Convert to fraction form
    2,763.39/4,145.75 = 914.51/x
  3. Step 3: Cross multiply
    2,763.39x = 4,145.75 × 914.51
  4. Step 4: Simplify right side
    2,763.39x = 3,791,304.53
  5. Step 5: Solve for x
    x = 3,791,304.53/2,763.39
  6. Step 6: Final answer
    x = 1,371.98

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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.