Home / 1,556.25-2,149.47-1,135.91

Finding the Fourth Proportional to 1,556.25, 2,149.47 and 1,135.91

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Solution

The fourth proportional to 1,556.25, 2,149.47 and 1,135.91 is: 1,568.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,556.25 : 2,149.47 = 1,135.91 : x
  2. Step 2: Convert to fraction form
    1,556.25/2,149.47 = 1,135.91/x
  3. Step 3: Cross multiply
    1,556.25x = 2,149.47 × 1,135.91
  4. Step 4: Simplify right side
    1,556.25x = 2,441,593.72
  5. Step 5: Solve for x
    x = 2,441,593.72/1,556.25
  6. Step 6: Final answer
    x = 1,568.90

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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.