Home / 5,263.07-7,887.75-2,139.39

Finding the Fourth Proportional to 5,263.07, 7,887.75 and 2,139.39

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Solution

The fourth proportional to 5,263.07, 7,887.75 and 2,139.39 is: 3,206.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,263.07 : 7,887.75 = 2,139.39 : x
  2. Step 2: Convert to fraction form
    5,263.07/7,887.75 = 2,139.39/x
  3. Step 3: Cross multiply
    5,263.07x = 7,887.75 × 2,139.39
  4. Step 4: Simplify right side
    5,263.07x = 16,874,965.45
  5. Step 5: Solve for x
    x = 16,874,965.45/5,263.07
  6. Step 6: Final answer
    x = 3,206.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.