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Finding the Fourth Proportional to 2,679.95, 3,700.29 and 1,935.56

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Solution

The fourth proportional to 2,679.95, 3,700.29 and 1,935.56 is: 2,672.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,679.95 : 3,700.29 = 1,935.56 : x
  2. Step 2: Convert to fraction form
    2,679.95/3,700.29 = 1,935.56/x
  3. Step 3: Cross multiply
    2,679.95x = 3,700.29 × 1,935.56
  4. Step 4: Simplify right side
    2,679.95x = 7,162,114.81
  5. Step 5: Solve for x
    x = 7,162,114.81/2,679.95
  6. Step 6: Final answer
    x = 2,672.49

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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.