Home / 7,390.48-11,081.58-2,458.78

Finding the Fourth Proportional to 7,390.48, 11,081.58 and 2,458.78

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Solution

The fourth proportional to 7,390.48, 11,081.58 and 2,458.78 is: 3,686.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,390.48 : 11,081.58 = 2,458.78 : x
  2. Step 2: Convert to fraction form
    7,390.48/11,081.58 = 2,458.78/x
  3. Step 3: Cross multiply
    7,390.48x = 11,081.58 × 2,458.78
  4. Step 4: Simplify right side
    7,390.48x = 27,247,167.27
  5. Step 5: Solve for x
    x = 27,247,167.27/7,390.48
  6. Step 6: Final answer
    x = 3,686.79

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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.