Home / 5,243.76-7,215.80-5,211.36

Finding the Fourth Proportional to 5,243.76, 7,215.80 and 5,211.36

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Solution

The fourth proportional to 5,243.76, 7,215.80 and 5,211.36 is: 7,171.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,243.76 : 7,215.80 = 5,211.36 : x
  2. Step 2: Convert to fraction form
    5,243.76/7,215.80 = 5,211.36/x
  3. Step 3: Cross multiply
    5,243.76x = 7,215.80 × 5,211.36
  4. Step 4: Simplify right side
    5,243.76x = 37,604,131.49
  5. Step 5: Solve for x
    x = 37,604,131.49/5,243.76
  6. Step 6: Final answer
    x = 7,171.22

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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.