Home / 3,356.20-5,034.70-891.06

Finding the Fourth Proportional to 3,356.20, 5,034.70 and 891.06

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Solution

The fourth proportional to 3,356.20, 5,034.70 and 891.06 is: 1,336.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,356.20 : 5,034.70 = 891.06 : x
  2. Step 2: Convert to fraction form
    3,356.20/5,034.70 = 891.06/x
  3. Step 3: Cross multiply
    3,356.20x = 5,034.70 × 891.06
  4. Step 4: Simplify right side
    3,356.20x = 4,486,219.78
  5. Step 5: Solve for x
    x = 4,486,219.78/3,356.20
  6. Step 6: Final answer
    x = 1,336.70

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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.