Home / 7,521.78-11,286.55-5,458.79

Finding the Fourth Proportional to 7,521.78, 11,286.55 and 5,458.79

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Solution

The fourth proportional to 7,521.78, 11,286.55 and 5,458.79 is: 8,191.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,521.78 : 11,286.55 = 5,458.79 : x
  2. Step 2: Convert to fraction form
    7,521.78/11,286.55 = 5,458.79/x
  3. Step 3: Cross multiply
    7,521.78x = 11,286.55 × 5,458.79
  4. Step 4: Simplify right side
    7,521.78x = 61,610,941.31
  5. Step 5: Solve for x
    x = 61,610,941.31/7,521.78
  6. Step 6: Final answer
    x = 8,191.00

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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.