Home / 1,612.41-2,225.42-913.78

Finding the Fourth Proportional to 1,612.41, 2,225.42 and 913.78

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Solution

The fourth proportional to 1,612.41, 2,225.42 and 913.78 is: 1,261.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,612.41 : 2,225.42 = 913.78 : x
  2. Step 2: Convert to fraction form
    1,612.41/2,225.42 = 913.78/x
  3. Step 3: Cross multiply
    1,612.41x = 2,225.42 × 913.78
  4. Step 4: Simplify right side
    1,612.41x = 2,033,551.07
  5. Step 5: Solve for x
    x = 2,033,551.07/1,612.41
  6. Step 6: Final answer
    x = 1,261.19

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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.