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Finding the Fourth Proportional to 3,805.47, 5,707.44 and 1,340.39

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Solution

The fourth proportional to 3,805.47, 5,707.44 and 1,340.39 is: 2,010.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,805.47 : 5,707.44 = 1,340.39 : x
  2. Step 2: Convert to fraction form
    3,805.47/5,707.44 = 1,340.39/x
  3. Step 3: Cross multiply
    3,805.47x = 5,707.44 × 1,340.39
  4. Step 4: Simplify right side
    3,805.47x = 7,650,195.50
  5. Step 5: Solve for x
    x = 7,650,195.50/3,805.47
  6. Step 6: Final answer
    x = 2,010.32

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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.