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Finding the Fourth Proportional to 4,908.76, 7,363.12 and 1,986.28

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Solution

The fourth proportional to 4,908.76, 7,363.12 and 1,986.28 is: 2,979.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,908.76 : 7,363.12 = 1,986.28 : x
  2. Step 2: Convert to fraction form
    4,908.76/7,363.12 = 1,986.28/x
  3. Step 3: Cross multiply
    4,908.76x = 7,363.12 × 1,986.28
  4. Step 4: Simplify right side
    4,908.76x = 14,625,217.99
  5. Step 5: Solve for x
    x = 14,625,217.99/4,908.76
  6. Step 6: Final answer
    x = 2,979.41

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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.