Home / 5,656.10-7,805.40-3,138.14

Finding the Fourth Proportional to 5,656.10, 7,805.40 and 3,138.14

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Solution

The fourth proportional to 5,656.10, 7,805.40 and 3,138.14 is: 4,330.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,656.10 : 7,805.40 = 3,138.14 : x
  2. Step 2: Convert to fraction form
    5,656.10/7,805.40 = 3,138.14/x
  3. Step 3: Cross multiply
    5,656.10x = 7,805.40 × 3,138.14
  4. Step 4: Simplify right side
    5,656.10x = 24,494,437.96
  5. Step 5: Solve for x
    x = 24,494,437.96/5,656.10
  6. Step 6: Final answer
    x = 4,330.62

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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.