Home / 7,695.76-11,539.50-3,988.79

Finding the Fourth Proportional to 7,695.76, 11,539.50 and 3,988.79

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Solution

The fourth proportional to 7,695.76, 11,539.50 and 3,988.79 is: 5,981.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,695.76 : 11,539.50 = 3,988.79 : x
  2. Step 2: Convert to fraction form
    7,695.76/11,539.50 = 3,988.79/x
  3. Step 3: Cross multiply
    7,695.76x = 11,539.50 × 3,988.79
  4. Step 4: Simplify right side
    7,695.76x = 46,028,642.21
  5. Step 5: Solve for x
    x = 46,028,642.21/7,695.76
  6. Step 6: Final answer
    x = 5,981.04

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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.