Home / 7,772.78-11,654.89-5,310.38

Finding the Fourth Proportional to 7,772.78, 11,654.89 and 5,310.38

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Solution

The fourth proportional to 7,772.78, 11,654.89 and 5,310.38 is: 7,962.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,772.78 : 11,654.89 = 5,310.38 : x
  2. Step 2: Convert to fraction form
    7,772.78/11,654.89 = 5,310.38/x
  3. Step 3: Cross multiply
    7,772.78x = 11,654.89 × 5,310.38
  4. Step 4: Simplify right side
    7,772.78x = 61,891,823.21
  5. Step 5: Solve for x
    x = 61,891,823.21/7,772.78
  6. Step 6: Final answer
    x = 7,962.64

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1.5x scale

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.