Home / 7,647.60-10,553.79-4,290.22

Finding the Fourth Proportional to 7,647.60, 10,553.79 and 4,290.22

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Solution

The fourth proportional to 7,647.60, 10,553.79 and 4,290.22 is: 5,920.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,647.60 : 10,553.79 = 4,290.22 : x
  2. Step 2: Convert to fraction form
    7,647.60/10,553.79 = 4,290.22/x
  3. Step 3: Cross multiply
    7,647.60x = 10,553.79 × 4,290.22
  4. Step 4: Simplify right side
    7,647.60x = 45,278,050.85
  5. Step 5: Solve for x
    x = 45,278,050.85/7,647.60
  6. Step 6: Final answer
    x = 5,920.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.