Home / 3,159.76-4,740.18-1,405.39

Finding the Fourth Proportional to 3,159.76, 4,740.18 and 1,405.39

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Solution

The fourth proportional to 3,159.76, 4,740.18 and 1,405.39 is: 2,108.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,159.76 : 4,740.18 = 1,405.39 : x
  2. Step 2: Convert to fraction form
    3,159.76/4,740.18 = 1,405.39/x
  3. Step 3: Cross multiply
    3,159.76x = 4,740.18 × 1,405.39
  4. Step 4: Simplify right side
    3,159.76x = 6,661,801.57
  5. Step 5: Solve for x
    x = 6,661,801.57/3,159.76
  6. Step 6: Final answer
    x = 2,108.33

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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.