Home / 5,109.10-7,663.65-3,813.10

Finding the Fourth Proportional to 5,109.10, 7,663.65 and 3,813.10

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Solution

The fourth proportional to 5,109.10, 7,663.65 and 3,813.10 is: 5,719.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,109.10 : 7,663.65 = 3,813.10 : x
  2. Step 2: Convert to fraction form
    5,109.10/7,663.65 = 3,813.10/x
  3. Step 3: Cross multiply
    5,109.10x = 7,663.65 × 3,813.10
  4. Step 4: Simplify right side
    5,109.10x = 29,222,263.82
  5. Step 5: Solve for x
    x = 29,222,263.82/5,109.10
  6. Step 6: Final answer
    x = 5,719.65

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1.5x scale

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.