Home / 7,070.80-9,757.51-3,926.79

Finding the Fourth Proportional to 7,070.80, 9,757.51 and 3,926.79

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Solution

The fourth proportional to 7,070.80, 9,757.51 and 3,926.79 is: 5,418.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,070.80 : 9,757.51 = 3,926.79 : x
  2. Step 2: Convert to fraction form
    7,070.80/9,757.51 = 3,926.79/x
  3. Step 3: Cross multiply
    7,070.80x = 9,757.51 × 3,926.79
  4. Step 4: Simplify right side
    7,070.80x = 38,315,692.69
  5. Step 5: Solve for x
    x = 38,315,692.69/7,070.80
  6. Step 6: Final answer
    x = 5,418.86

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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.