Home / 7,479.89-11,219.79-2,285.77

Finding the Fourth Proportional to 7,479.89, 11,219.79 and 2,285.77

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Solution

The fourth proportional to 7,479.89, 11,219.79 and 2,285.77 is: 3,428.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,479.89 : 11,219.79 = 2,285.77 : x
  2. Step 2: Convert to fraction form
    7,479.89/11,219.79 = 2,285.77/x
  3. Step 3: Cross multiply
    7,479.89x = 11,219.79 × 2,285.77
  4. Step 4: Simplify right side
    7,479.89x = 25,645,854.52
  5. Step 5: Solve for x
    x = 25,645,854.52/7,479.89
  6. Step 6: Final answer
    x = 3,428.64

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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.