Home / 7,220.28-10,837.70-5,142.62

Finding the Fourth Proportional to 7,220.28, 10,837.70 and 5,142.62

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Solution

The fourth proportional to 7,220.28, 10,837.70 and 5,142.62 is: 7,719.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,220.28 : 10,837.70 = 5,142.62 : x
  2. Step 2: Convert to fraction form
    7,220.28/10,837.70 = 5,142.62/x
  3. Step 3: Cross multiply
    7,220.28x = 10,837.70 × 5,142.62
  4. Step 4: Simplify right side
    7,220.28x = 55,734,172.77
  5. Step 5: Solve for x
    x = 55,734,172.77/7,220.28
  6. Step 6: Final answer
    x = 7,719.12

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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.