Home / 1,612.56-2,225.57-949.78

Finding the Fourth Proportional to 1,612.56, 2,225.57 and 949.78

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Solution

The fourth proportional to 1,612.56, 2,225.57 and 949.78 is: 1,310.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,612.56 : 2,225.57 = 949.78 : x
  2. Step 2: Convert to fraction form
    1,612.56/2,225.57 = 949.78/x
  3. Step 3: Cross multiply
    1,612.56x = 2,225.57 × 949.78
  4. Step 4: Simplify right side
    1,612.56x = 2,113,801.87
  5. Step 5: Solve for x
    x = 2,113,801.87/1,612.56
  6. Step 6: Final answer
    x = 1,310.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.