Home / 1,891.39-2,610.35-1,145.33

Finding the Fourth Proportional to 1,891.39, 2,610.35 and 1,145.33

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Solution

The fourth proportional to 1,891.39, 2,610.35 and 1,145.33 is: 1,580.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,891.39 : 2,610.35 = 1,145.33 : x
  2. Step 2: Convert to fraction form
    1,891.39/2,610.35 = 1,145.33/x
  3. Step 3: Cross multiply
    1,891.39x = 2,610.35 × 1,145.33
  4. Step 4: Simplify right side
    1,891.39x = 2,989,718.03
  5. Step 5: Solve for x
    x = 2,989,718.03/1,891.39
  6. Step 6: Final answer
    x = 1,580.70

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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.