Home / 7,934.78-11,899.80-4,977.72

Finding the Fourth Proportional to 7,934.78, 11,899.80 and 4,977.72

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Solution

The fourth proportional to 7,934.78, 11,899.80 and 4,977.72 is: 7,465.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,934.78 : 11,899.80 = 4,977.72 : x
  2. Step 2: Convert to fraction form
    7,934.78/11,899.80 = 4,977.72/x
  3. Step 3: Cross multiply
    7,934.78x = 11,899.80 × 4,977.72
  4. Step 4: Simplify right side
    7,934.78x = 59,233,872.46
  5. Step 5: Solve for x
    x = 59,233,872.46/7,934.78
  6. Step 6: Final answer
    x = 7,465.09

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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.