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Finding the Fourth Proportional to 3,807.95, 5,711.40 and 1,342.46

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Solution

The fourth proportional to 3,807.95, 5,711.40 and 1,342.46 is: 2,013.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,807.95 : 5,711.40 = 1,342.46 : x
  2. Step 2: Convert to fraction form
    3,807.95/5,711.40 = 1,342.46/x
  3. Step 3: Cross multiply
    3,807.95x = 5,711.40 × 1,342.46
  4. Step 4: Simplify right side
    3,807.95x = 7,667,297.49
  5. Step 5: Solve for x
    x = 7,667,297.49/3,807.95
  6. Step 6: Final answer
    x = 2,013.50

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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.