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Finding the Fourth Proportional to 8,709.01, 13,040.39 and 4,547.90

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Solution

The fourth proportional to 8,709.01, 13,040.39 and 4,547.90 is: 6,809.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,709.01 : 13,040.39 = 4,547.90 : x
  2. Step 2: Convert to fraction form
    8,709.01/13,040.39 = 4,547.90/x
  3. Step 3: Cross multiply
    8,709.01x = 13,040.39 × 4,547.90
  4. Step 4: Simplify right side
    8,709.01x = 59,306,433.65
  5. Step 5: Solve for x
    x = 59,306,433.65/8,709.01
  6. Step 6: Final answer
    x = 6,809.78

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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.