Home / 7,117.68-10,692.72-5,149.38

Finding the Fourth Proportional to 7,117.68, 10,692.72 and 5,149.38

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Solution

The fourth proportional to 7,117.68, 10,692.72 and 5,149.38 is: 7,735.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,117.68 : 10,692.72 = 5,149.38 : x
  2. Step 2: Convert to fraction form
    7,117.68/10,692.72 = 5,149.38/x
  3. Step 3: Cross multiply
    7,117.68x = 10,692.72 × 5,149.38
  4. Step 4: Simplify right side
    7,117.68x = 55,060,878.51
  5. Step 5: Solve for x
    x = 55,060,878.51/7,117.68
  6. Step 6: Final answer
    x = 7,735.79

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1.5x scale

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.