Home / 7,390.90-11,085.40-2,196.78

Finding the Fourth Proportional to 7,390.90, 11,085.40 and 2,196.78

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Solution

The fourth proportional to 7,390.90, 11,085.40 and 2,196.78 is: 3,294.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,390.90 : 11,085.40 = 2,196.78 : x
  2. Step 2: Convert to fraction form
    7,390.90/11,085.40 = 2,196.78/x
  3. Step 3: Cross multiply
    7,390.90x = 11,085.40 × 2,196.78
  4. Step 4: Simplify right side
    7,390.90x = 24,352,185.01
  5. Step 5: Solve for x
    x = 24,352,185.01/7,390.90
  6. Step 6: Final answer
    x = 3,294.89

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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.