Home / 8,723.07-12,039.38-5,138.22

Finding the Fourth Proportional to 8,723.07, 12,039.38 and 5,138.22

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Solution

The fourth proportional to 8,723.07, 12,039.38 and 5,138.22 is: 7,091.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,723.07 : 12,039.38 = 5,138.22 : x
  2. Step 2: Convert to fraction form
    8,723.07/12,039.38 = 5,138.22/x
  3. Step 3: Cross multiply
    8,723.07x = 12,039.38 × 5,138.22
  4. Step 4: Simplify right side
    8,723.07x = 61,860,957.41
  5. Step 5: Solve for x
    x = 61,860,957.41/8,723.07
  6. Step 6: Final answer
    x = 7,091.65

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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.