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Finding the Fourth Proportional to 4,984.12, 7,478.34 and 2,672.92

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Solution

The fourth proportional to 4,984.12, 7,478.34 and 2,672.92 is: 4,010.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,984.12 : 7,478.34 = 2,672.92 : x
  2. Step 2: Convert to fraction form
    4,984.12/7,478.34 = 2,672.92/x
  3. Step 3: Cross multiply
    4,984.12x = 7,478.34 × 2,672.92
  4. Step 4: Simplify right side
    4,984.12x = 19,989,004.55
  5. Step 5: Solve for x
    x = 19,989,004.55/4,984.12
  6. Step 6: Final answer
    x = 4,010.54

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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.