Home / 7,130.33-9,839.85-3,986.52

Finding the Fourth Proportional to 7,130.33, 9,839.85 and 3,986.52

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Solution

The fourth proportional to 7,130.33, 9,839.85 and 3,986.52 is: 5,501.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,130.33 : 9,839.85 = 3,986.52 : x
  2. Step 2: Convert to fraction form
    7,130.33/9,839.85 = 3,986.52/x
  3. Step 3: Cross multiply
    7,130.33x = 9,839.85 × 3,986.52
  4. Step 4: Simplify right side
    7,130.33x = 39,226,706.97
  5. Step 5: Solve for x
    x = 39,226,706.97/7,130.33
  6. Step 6: Final answer
    x = 5,501.39

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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.