Home / 8,589.39-12,888.47-4,091.53

Finding the Fourth Proportional to 8,589.39, 12,888.47 and 4,091.53

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Solution

The fourth proportional to 8,589.39, 12,888.47 and 4,091.53 is: 6,139.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,589.39 : 12,888.47 = 4,091.53 : x
  2. Step 2: Convert to fraction form
    8,589.39/12,888.47 = 4,091.53/x
  3. Step 3: Cross multiply
    8,589.39x = 12,888.47 × 4,091.53
  4. Step 4: Simplify right side
    8,589.39x = 52,733,561.66
  5. Step 5: Solve for x
    x = 52,733,561.66/8,589.39
  6. Step 6: Final answer
    x = 6,139.38

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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.