Home / 7,848.78-11,776.41-2,656.14

Finding the Fourth Proportional to 7,848.78, 11,776.41 and 2,656.14

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Solution

The fourth proportional to 7,848.78, 11,776.41 and 2,656.14 is: 3,985.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,848.78 : 11,776.41 = 2,656.14 : x
  2. Step 2: Convert to fraction form
    7,848.78/11,776.41 = 2,656.14/x
  3. Step 3: Cross multiply
    7,848.78x = 11,776.41 × 2,656.14
  4. Step 4: Simplify right side
    7,848.78x = 31,279,793.66
  5. Step 5: Solve for x
    x = 31,279,793.66/7,848.78
  6. Step 6: Final answer
    x = 3,985.31

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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.