Home / 7,787.78-10,747.14-4,431.25

Finding the Fourth Proportional to 7,787.78, 10,747.14 and 4,431.25

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Solution

The fourth proportional to 7,787.78, 10,747.14 and 4,431.25 is: 6,115.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,787.78 : 10,747.14 = 4,431.25 : x
  2. Step 2: Convert to fraction form
    7,787.78/10,747.14 = 4,431.25/x
  3. Step 3: Cross multiply
    7,787.78x = 10,747.14 × 4,431.25
  4. Step 4: Simplify right side
    7,787.78x = 47,623,237.26
  5. Step 5: Solve for x
    x = 47,623,237.26/7,787.78
  6. Step 6: Final answer
    x = 6,115.13

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1.5x scale

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.