Home / 9,286.45-12,815.33-5,307.56

Finding the Fourth Proportional to 9,286.45, 12,815.33 and 5,307.56

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Solution

The fourth proportional to 9,286.45, 12,815.33 and 5,307.56 is: 7,324.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,286.45 : 12,815.33 = 5,307.56 : x
  2. Step 2: Convert to fraction form
    9,286.45/12,815.33 = 5,307.56/x
  3. Step 3: Cross multiply
    9,286.45x = 12,815.33 × 5,307.56
  4. Step 4: Simplify right side
    9,286.45x = 68,018,120.19
  5. Step 5: Solve for x
    x = 68,018,120.19/9,286.45
  6. Step 6: Final answer
    x = 7,324.45

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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.