Home / 8,139.69-12,199.55-4,632.66

Finding the Fourth Proportional to 8,139.69, 12,199.55 and 4,632.66

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Solution

The fourth proportional to 8,139.69, 12,199.55 and 4,632.66 is: 6,943.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,139.69 : 12,199.55 = 4,632.66 : x
  2. Step 2: Convert to fraction form
    8,139.69/12,199.55 = 4,632.66/x
  3. Step 3: Cross multiply
    8,139.69x = 12,199.55 × 4,632.66
  4. Step 4: Simplify right side
    8,139.69x = 56,516,344.14
  5. Step 5: Solve for x
    x = 56,516,344.14/8,139.69
  6. Step 6: Final answer
    x = 6,943.30

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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.