Home / 3,031.07-4,546.59-839.79

Finding the Fourth Proportional to 3,031.07, 4,546.59 and 839.79

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Solution

The fourth proportional to 3,031.07, 4,546.59 and 839.79 is: 1,259.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,031.07 : 4,546.59 = 839.79 : x
  2. Step 2: Convert to fraction form
    3,031.07/4,546.59 = 839.79/x
  3. Step 3: Cross multiply
    3,031.07x = 4,546.59 × 839.79
  4. Step 4: Simplify right side
    3,031.07x = 3,818,180.82
  5. Step 5: Solve for x
    x = 3,818,180.82/3,031.07
  6. Step 6: Final answer
    x = 1,259.68

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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.