Home / 3,138.39-4,706.80-1,057.84

Finding the Fourth Proportional to 3,138.39, 4,706.80 and 1,057.84

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Solution

The fourth proportional to 3,138.39, 4,706.80 and 1,057.84 is: 1,586.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,138.39 : 4,706.80 = 1,057.84 : x
  2. Step 2: Convert to fraction form
    3,138.39/4,706.80 = 1,057.84/x
  3. Step 3: Cross multiply
    3,138.39x = 4,706.80 × 1,057.84
  4. Step 4: Simplify right side
    3,138.39x = 4,979,041.31
  5. Step 5: Solve for x
    x = 4,979,041.31/3,138.39
  6. Step 6: Final answer
    x = 1,586.50

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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.