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Finding the Fourth Proportional to 3,320.76, 4,981.12 and 1,012.26

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Solution

The fourth proportional to 3,320.76, 4,981.12 and 1,012.26 is: 1,518.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,320.76 : 4,981.12 = 1,012.26 : x
  2. Step 2: Convert to fraction form
    3,320.76/4,981.12 = 1,012.26/x
  3. Step 3: Cross multiply
    3,320.76x = 4,981.12 × 1,012.26
  4. Step 4: Simplify right side
    3,320.76x = 5,042,188.53
  5. Step 5: Solve for x
    x = 5,042,188.53/3,320.76
  6. Step 6: Final answer
    x = 1,518.38

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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.