Home / 7,109.31-9,810.68-4,125.39

Finding the Fourth Proportional to 7,109.31, 9,810.68 and 4,125.39

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Solution

The fourth proportional to 7,109.31, 9,810.68 and 4,125.39 is: 5,692.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,109.31 : 9,810.68 = 4,125.39 : x
  2. Step 2: Convert to fraction form
    7,109.31/9,810.68 = 4,125.39/x
  3. Step 3: Cross multiply
    7,109.31x = 9,810.68 × 4,125.39
  4. Step 4: Simplify right side
    7,109.31x = 40,472,860.54
  5. Step 5: Solve for x
    x = 40,472,860.54/7,109.31
  6. Step 6: Final answer
    x = 5,692.94

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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.