Home / 3,138.68-4,710.45-1,679.06

Finding the Fourth Proportional to 3,138.68, 4,710.45 and 1,679.06

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Solution

The fourth proportional to 3,138.68, 4,710.45 and 1,679.06 is: 2,519.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,138.68 : 4,710.45 = 1,679.06 : x
  2. Step 2: Convert to fraction form
    3,138.68/4,710.45 = 1,679.06/x
  3. Step 3: Cross multiply
    3,138.68x = 4,710.45 × 1,679.06
  4. Step 4: Simplify right side
    3,138.68x = 7,909,128.18
  5. Step 5: Solve for x
    x = 7,909,128.18/3,138.68
  6. Step 6: Final answer
    x = 2,519.89

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1.5x scale

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.