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Finding the Fourth Proportional to 9,012.65, 13,518.77 and 4,078.71

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Solution

The fourth proportional to 9,012.65, 13,518.77 and 4,078.71 is: 6,117.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,012.65 : 13,518.77 = 4,078.71 : x
  2. Step 2: Convert to fraction form
    9,012.65/13,518.77 = 4,078.71/x
  3. Step 3: Cross multiply
    9,012.65x = 13,518.77 × 4,078.71
  4. Step 4: Simplify right side
    9,012.65x = 55,139,121.99
  5. Step 5: Solve for x
    x = 55,139,121.99/9,012.65
  6. Step 6: Final answer
    x = 6,117.97

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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.