Home / 7,211.34-10,815.66-3,314.79

Finding the Fourth Proportional to 7,211.34, 10,815.66 and 3,314.79

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Solution

The fourth proportional to 7,211.34, 10,815.66 and 3,314.79 is: 4,971.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,211.34 : 10,815.66 = 3,314.79 : x
  2. Step 2: Convert to fraction form
    7,211.34/10,815.66 = 3,314.79/x
  3. Step 3: Cross multiply
    7,211.34x = 10,815.66 × 3,314.79
  4. Step 4: Simplify right side
    7,211.34x = 35,851,641.61
  5. Step 5: Solve for x
    x = 35,851,641.61/7,211.34
  6. Step 6: Final answer
    x = 4,971.56

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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.