Home / 7,045.39-9,721.96-4,212.20

Finding the Fourth Proportional to 7,045.39, 9,721.96 and 4,212.20

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Solution

The fourth proportional to 7,045.39, 9,721.96 and 4,212.20 is: 5,812.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,045.39 : 9,721.96 = 4,212.20 : x
  2. Step 2: Convert to fraction form
    7,045.39/9,721.96 = 4,212.20/x
  3. Step 3: Cross multiply
    7,045.39x = 9,721.96 × 4,212.20
  4. Step 4: Simplify right side
    7,045.39x = 40,950,839.91
  5. Step 5: Solve for x
    x = 40,950,839.91/7,045.39
  6. Step 6: Final answer
    x = 5,812.43

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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.