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Finding the Fourth Proportional to 2,618.08, 3,927.12 and 974.47

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Solution

The fourth proportional to 2,618.08, 3,927.12 and 974.47 is: 1,461.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,618.08 : 3,927.12 = 974.47 : x
  2. Step 2: Convert to fraction form
    2,618.08/3,927.12 = 974.47/x
  3. Step 3: Cross multiply
    2,618.08x = 3,927.12 × 974.47
  4. Step 4: Simplify right side
    2,618.08x = 3,826,860.63
  5. Step 5: Solve for x
    x = 3,826,860.63/2,618.08
  6. Step 6: Final answer
    x = 1,461.71

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Similar ratio
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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.