Home / 3,138.14-4,330.65-1,740.89

Finding the Fourth Proportional to 3,138.14, 4,330.65 and 1,740.89

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Solution

The fourth proportional to 3,138.14, 4,330.65 and 1,740.89 is: 2,402.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,138.14 : 4,330.65 = 1,740.89 : x
  2. Step 2: Convert to fraction form
    3,138.14/4,330.65 = 1,740.89/x
  3. Step 3: Cross multiply
    3,138.14x = 4,330.65 × 1,740.89
  4. Step 4: Simplify right side
    3,138.14x = 7,539,185.28
  5. Step 5: Solve for x
    x = 7,539,185.28/3,138.14
  6. Step 6: Final answer
    x = 2,402.44

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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.