Home / 7,130.52-9,840.60-3,986.73

Finding the Fourth Proportional to 7,130.52, 9,840.60 and 3,986.73

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Solution

The fourth proportional to 7,130.52, 9,840.60 and 3,986.73 is: 5,501.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,130.52 : 9,840.60 = 3,986.73 : x
  2. Step 2: Convert to fraction form
    7,130.52/9,840.60 = 3,986.73/x
  3. Step 3: Cross multiply
    7,130.52x = 9,840.60 × 3,986.73
  4. Step 4: Simplify right side
    7,130.52x = 39,231,815.24
  5. Step 5: Solve for x
    x = 39,231,815.24/7,130.52
  6. Step 6: Final answer
    x = 5,501.96

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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.