Home / 5,057.39-6,981.67-3,920.50

Finding the Fourth Proportional to 5,057.39, 6,981.67 and 3,920.50

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Solution

The fourth proportional to 5,057.39, 6,981.67 and 3,920.50 is: 5,412.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,057.39 : 6,981.67 = 3,920.50 : x
  2. Step 2: Convert to fraction form
    5,057.39/6,981.67 = 3,920.50/x
  3. Step 3: Cross multiply
    5,057.39x = 6,981.67 × 3,920.50
  4. Step 4: Simplify right side
    5,057.39x = 27,371,637.24
  5. Step 5: Solve for x
    x = 27,371,637.24/5,057.39
  6. Step 6: Final answer
    x = 5,412.21

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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.