Home / 8,445.15-11,589.98-7,774.47

Finding the Fourth Proportional to 8,445.15, 11,589.98 and 7,774.47

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Solution

The fourth proportional to 8,445.15, 11,589.98 and 7,774.47 is: 10,669.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,445.15 : 11,589.98 = 7,774.47 : x
  2. Step 2: Convert to fraction form
    8,445.15/11,589.98 = 7,774.47/x
  3. Step 3: Cross multiply
    8,445.15x = 11,589.98 × 7,774.47
  4. Step 4: Simplify right side
    8,445.15x = 90,105,912.94
  5. Step 5: Solve for x
    x = 90,105,912.94/8,445.15
  6. Step 6: Final answer
    x = 10,669.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.