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Finding the Fourth Proportional to 9,039.08, 13,506.79 and 6,890.05

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Solution

The fourth proportional to 9,039.08, 13,506.79 and 6,890.05 is: 10,295.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,039.08 : 13,506.79 = 6,890.05 : x
  2. Step 2: Convert to fraction form
    9,039.08/13,506.79 = 6,890.05/x
  3. Step 3: Cross multiply
    9,039.08x = 13,506.79 × 6,890.05
  4. Step 4: Simplify right side
    9,039.08x = 93,062,390.91
  5. Step 5: Solve for x
    x = 93,062,390.91/9,039.08
  6. Step 6: Final answer
    x = 10,295.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.