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Finding the Fourth Proportional to 3,020.59, 4,531.08 and 940.78

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Solution

The fourth proportional to 3,020.59, 4,531.08 and 940.78 is: 1,411.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,020.59 : 4,531.08 = 940.78 : x
  2. Step 2: Convert to fraction form
    3,020.59/4,531.08 = 940.78/x
  3. Step 3: Cross multiply
    3,020.59x = 4,531.08 × 940.78
  4. Step 4: Simplify right side
    3,020.59x = 4,262,749.44
  5. Step 5: Solve for x
    x = 4,262,749.44/3,020.59
  6. Step 6: Final answer
    x = 1,411.23

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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.