Home / 7,979.78-11,011.86-4,442.91

Finding the Fourth Proportional to 7,979.78, 11,011.86 and 4,442.91

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Solution

The fourth proportional to 7,979.78, 11,011.86 and 4,442.91 is: 6,131.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,979.78 : 11,011.86 = 4,442.91 : x
  2. Step 2: Convert to fraction form
    7,979.78/11,011.86 = 4,442.91/x
  3. Step 3: Cross multiply
    7,979.78x = 11,011.86 × 4,442.91
  4. Step 4: Simplify right side
    7,979.78x = 48,924,702.91
  5. Step 5: Solve for x
    x = 48,924,702.91/7,979.78
  6. Step 6: Final answer
    x = 6,131.08

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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.