Home / 7,320-10,106.16-5,081.12

Finding the Fourth Proportional to 7,320, 10,106.16 and 5,081.12

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Solution

The fourth proportional to 7,320, 10,106.16 and 5,081.12 is: 7,015.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,320 : 10,106.16 = 5,081.12 : x
  2. Step 2: Convert to fraction form
    7,320/10,106.16 = 5,081.12/x
  3. Step 3: Cross multiply
    7,320x = 10,106.16 × 5,081.12
  4. Step 4: Simplify right side
    7,320x = 51,350,611.70
  5. Step 5: Solve for x
    x = 51,350,611.70/7,320
  6. Step 6: Final answer
    x = 7,015.11

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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.