Home / 3,031.70-4,547.07-839.97

Finding the Fourth Proportional to 3,031.70, 4,547.07 and 839.97

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Solution

The fourth proportional to 3,031.70, 4,547.07 and 839.97 is: 1,259.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,031.70 : 4,547.07 = 839.97 : x
  2. Step 2: Convert to fraction form
    3,031.70/4,547.07 = 839.97/x
  3. Step 3: Cross multiply
    3,031.70x = 4,547.07 × 839.97
  4. Step 4: Simplify right side
    3,031.70x = 3,819,402.39
  5. Step 5: Solve for x
    x = 3,819,402.39/3,031.70
  6. Step 6: Final answer
    x = 1,259.82

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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.