Home / 7,987.95-11,982.75-3,061.75

Finding the Fourth Proportional to 7,987.95, 11,982.75 and 3,061.75

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Solution

The fourth proportional to 7,987.95, 11,982.75 and 3,061.75 is: 4,592.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,987.95 : 11,982.75 = 3,061.75 : x
  2. Step 2: Convert to fraction form
    7,987.95/11,982.75 = 3,061.75/x
  3. Step 3: Cross multiply
    7,987.95x = 11,982.75 × 3,061.75
  4. Step 4: Simplify right side
    7,987.95x = 36,688,184.81
  5. Step 5: Solve for x
    x = 36,688,184.81/7,987.95
  6. Step 6: Final answer
    x = 4,592.94

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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.