Home / 7,428.54-11,121.25-5,780.09

Finding the Fourth Proportional to 7,428.54, 11,121.25 and 5,780.09

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Solution

The fourth proportional to 7,428.54, 11,121.25 and 5,780.09 is: 8,653.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,428.54 : 11,121.25 = 5,780.09 : x
  2. Step 2: Convert to fraction form
    7,428.54/11,121.25 = 5,780.09/x
  3. Step 3: Cross multiply
    7,428.54x = 11,121.25 × 5,780.09
  4. Step 4: Simplify right side
    7,428.54x = 64,281,770.31
  5. Step 5: Solve for x
    x = 64,281,770.31/7,428.54
  6. Step 6: Final answer
    x = 8,653.35

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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.