Home / 3,139.13-4,708.70-1,405.37

Finding the Fourth Proportional to 3,139.13, 4,708.70 and 1,405.37

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Solution

The fourth proportional to 3,139.13, 4,708.70 and 1,405.37 is: 2,108.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.13 : 4,708.70 = 1,405.37 : x
  2. Step 2: Convert to fraction form
    3,139.13/4,708.70 = 1,405.37/x
  3. Step 3: Cross multiply
    3,139.13x = 4,708.70 × 1,405.37
  4. Step 4: Simplify right side
    3,139.13x = 6,617,458.69
  5. Step 5: Solve for x
    x = 6,617,458.69/3,139.13
  6. Step 6: Final answer
    x = 2,108.06

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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.