Home / 8,290.86-11,436.36-5,305.64

Finding the Fourth Proportional to 8,290.86, 11,436.36 and 5,305.64

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Solution

The fourth proportional to 8,290.86, 11,436.36 and 5,305.64 is: 7,318.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,290.86 : 11,436.36 = 5,305.64 : x
  2. Step 2: Convert to fraction form
    8,290.86/11,436.36 = 5,305.64/x
  3. Step 3: Cross multiply
    8,290.86x = 11,436.36 × 5,305.64
  4. Step 4: Simplify right side
    8,290.86x = 60,677,209.07
  5. Step 5: Solve for x
    x = 60,677,209.07/8,290.86
  6. Step 6: Final answer
    x = 7,318.57

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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.