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Finding the Fourth Proportional to 2,916.74, 4,375.05 and 968.96

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Solution

The fourth proportional to 2,916.74, 4,375.05 and 968.96 is: 1,453.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,916.74 : 4,375.05 = 968.96 : x
  2. Step 2: Convert to fraction form
    2,916.74/4,375.05 = 968.96/x
  3. Step 3: Cross multiply
    2,916.74x = 4,375.05 × 968.96
  4. Step 4: Simplify right side
    2,916.74x = 4,239,248.45
  5. Step 5: Solve for x
    x = 4,239,248.45/2,916.74
  6. Step 6: Final answer
    x = 1,453.42

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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.