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Finding the Fourth Proportional to 3,507.57, 4,839.57 and 2,015.91

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Solution

The fourth proportional to 3,507.57, 4,839.57 and 2,015.91 is: 2,781.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,507.57 : 4,839.57 = 2,015.91 : x
  2. Step 2: Convert to fraction form
    3,507.57/4,839.57 = 2,015.91/x
  3. Step 3: Cross multiply
    3,507.57x = 4,839.57 × 2,015.91
  4. Step 4: Simplify right side
    3,507.57x = 9,756,137.56
  5. Step 5: Solve for x
    x = 9,756,137.56/3,507.57
  6. Step 6: Final answer
    x = 2,781.45

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1.5x scale

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.