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Finding the Fourth Proportional to 3,507.66, 4,840.80 and 2,015.76

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Solution

The fourth proportional to 3,507.66, 4,840.80 and 2,015.76 is: 2,781.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,507.66 : 4,840.80 = 2,015.76 : x
  2. Step 2: Convert to fraction form
    3,507.66/4,840.80 = 2,015.76/x
  3. Step 3: Cross multiply
    3,507.66x = 4,840.80 × 2,015.76
  4. Step 4: Simplify right side
    3,507.66x = 9,757,891.01
  5. Step 5: Solve for x
    x = 9,757,891.01/3,507.66
  6. Step 6: Final answer
    x = 2,781.88

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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.