Home / 7,639.80-11,407.43-6,844.02

Finding the Fourth Proportional to 7,639.80, 11,407.43 and 6,844.02

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Solution

The fourth proportional to 7,639.80, 11,407.43 and 6,844.02 is: 10,219.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,639.80 : 11,407.43 = 6,844.02 : x
  2. Step 2: Convert to fraction form
    7,639.80/11,407.43 = 6,844.02/x
  3. Step 3: Cross multiply
    7,639.80x = 11,407.43 × 6,844.02
  4. Step 4: Simplify right side
    7,639.80x = 78,072,696.18
  5. Step 5: Solve for x
    x = 78,072,696.18/7,639.80
  6. Step 6: Final answer
    x = 10,219.21

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.