Home / 7,914.90-11,870.73-2,721.18

Finding the Fourth Proportional to 7,914.90, 11,870.73 and 2,721.18

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Solution

The fourth proportional to 7,914.90, 11,870.73 and 2,721.18 is: 4,081.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,914.90 : 11,870.73 = 2,721.18 : x
  2. Step 2: Convert to fraction form
    7,914.90/11,870.73 = 2,721.18/x
  3. Step 3: Cross multiply
    7,914.90x = 11,870.73 × 2,721.18
  4. Step 4: Simplify right side
    7,914.90x = 32,302,393.06
  5. Step 5: Solve for x
    x = 32,302,393.06/7,914.90
  6. Step 6: Final answer
    x = 4,081.21

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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.