Home / 7,814.78-11,722.40-3,070.74

Finding the Fourth Proportional to 7,814.78, 11,722.40 and 3,070.74

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Solution

The fourth proportional to 7,814.78, 11,722.40 and 3,070.74 is: 4,606.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,814.78 : 11,722.40 = 3,070.74 : x
  2. Step 2: Convert to fraction form
    7,814.78/11,722.40 = 3,070.74/x
  3. Step 3: Cross multiply
    7,814.78x = 11,722.40 × 3,070.74
  4. Step 4: Simplify right side
    7,814.78x = 35,996,442.58
  5. Step 5: Solve for x
    x = 35,996,442.58/7,814.78
  6. Step 6: Final answer
    x = 4,606.20

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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.