Home / 7,130.82-9,841.06-3,986.80

Finding the Fourth Proportional to 7,130.82, 9,841.06 and 3,986.80

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Solution

The fourth proportional to 7,130.82, 9,841.06 and 3,986.80 is: 5,502.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,130.82 : 9,841.06 = 3,986.80 : x
  2. Step 2: Convert to fraction form
    7,130.82/9,841.06 = 3,986.80/x
  3. Step 3: Cross multiply
    7,130.82x = 9,841.06 × 3,986.80
  4. Step 4: Simplify right side
    7,130.82x = 39,234,338.01
  5. Step 5: Solve for x
    x = 39,234,338.01/7,130.82
  6. Step 6: Final answer
    x = 5,502.08

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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.