Home / 1,551.27-2,140.70-843.08

Finding the Fourth Proportional to 1,551.27, 2,140.70 and 843.08

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Solution

The fourth proportional to 1,551.27, 2,140.70 and 843.08 is: 1,163.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,551.27 : 2,140.70 = 843.08 : x
  2. Step 2: Convert to fraction form
    1,551.27/2,140.70 = 843.08/x
  3. Step 3: Cross multiply
    1,551.27x = 2,140.70 × 843.08
  4. Step 4: Simplify right side
    1,551.27x = 1,804,778.11
  5. Step 5: Solve for x
    x = 1,804,778.11/1,551.27
  6. Step 6: Final answer
    x = 1,163.42

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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.