Home / 2,071.24-2,858.02-1,139.80

Finding the Fourth Proportional to 2,071.24, 2,858.02 and 1,139.80

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Solution

The fourth proportional to 2,071.24, 2,858.02 and 1,139.80 is: 1,572.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,071.24 : 2,858.02 = 1,139.80 : x
  2. Step 2: Convert to fraction form
    2,071.24/2,858.02 = 1,139.80/x
  3. Step 3: Cross multiply
    2,071.24x = 2,858.02 × 1,139.80
  4. Step 4: Simplify right side
    2,071.24x = 3,257,571.20
  5. Step 5: Solve for x
    x = 3,257,571.20/2,071.24
  6. Step 6: Final answer
    x = 1,572.76

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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.