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Finding the Fourth Proportional to 2,954.72, 4,079.08 and 2,290.08

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Solution

The fourth proportional to 2,954.72, 4,079.08 and 2,290.08 is: 3,161.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,954.72 : 4,079.08 = 2,290.08 : x
  2. Step 2: Convert to fraction form
    2,954.72/4,079.08 = 2,290.08/x
  3. Step 3: Cross multiply
    2,954.72x = 4,079.08 × 2,290.08
  4. Step 4: Simplify right side
    2,954.72x = 9,341,419.53
  5. Step 5: Solve for x
    x = 9,341,419.53/2,954.72
  6. Step 6: Final answer
    x = 3,161.52

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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.