Home / 2,071.13-2,858.20-1,139.63

Finding the Fourth Proportional to 2,071.13, 2,858.20 and 1,139.63

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Solution

The fourth proportional to 2,071.13, 2,858.20 and 1,139.63 is: 1,572.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,071.13 : 2,858.20 = 1,139.63 : x
  2. Step 2: Convert to fraction form
    2,071.13/2,858.20 = 1,139.63/x
  3. Step 3: Cross multiply
    2,071.13x = 2,858.20 × 1,139.63
  4. Step 4: Simplify right side
    2,071.13x = 3,257,273.33
  5. Step 5: Solve for x
    x = 3,257,273.33/2,071.13
  6. Step 6: Final answer
    x = 1,572.71

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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.