Home / 1,608.78-2,217.74-1,135.14

Finding the Fourth Proportional to 1,608.78, 2,217.74 and 1,135.14

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Solution

The fourth proportional to 1,608.78, 2,217.74 and 1,135.14 is: 1,564.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,608.78 : 2,217.74 = 1,135.14 : x
  2. Step 2: Convert to fraction form
    1,608.78/2,217.74 = 1,135.14/x
  3. Step 3: Cross multiply
    1,608.78x = 2,217.74 × 1,135.14
  4. Step 4: Simplify right side
    1,608.78x = 2,517,445.38
  5. Step 5: Solve for x
    x = 2,517,445.38/1,608.78
  6. Step 6: Final answer
    x = 1,564.82

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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.