Home / 3,121.60-4,299.06-3,053.56

Finding the Fourth Proportional to 3,121.60, 4,299.06 and 3,053.56

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Solution

The fourth proportional to 3,121.60, 4,299.06 and 3,053.56 is: 4,205.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,121.60 : 4,299.06 = 3,053.56 : x
  2. Step 2: Convert to fraction form
    3,121.60/4,299.06 = 3,053.56/x
  3. Step 3: Cross multiply
    3,121.60x = 4,299.06 × 3,053.56
  4. Step 4: Simplify right side
    3,121.60x = 13,127,437.65
  5. Step 5: Solve for x
    x = 13,127,437.65/3,121.60
  6. Step 6: Final answer
    x = 4,205.36

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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.