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Finding the Fourth Proportional to 7,551.75, 11,291.58 and 6,890.05

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Solution

The fourth proportional to 7,551.75, 11,291.58 and 6,890.05 is: 10,302.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,551.75 : 11,291.58 = 6,890.05 : x
  2. Step 2: Convert to fraction form
    7,551.75/11,291.58 = 6,890.05/x
  3. Step 3: Cross multiply
    7,551.75x = 11,291.58 × 6,890.05
  4. Step 4: Simplify right side
    7,551.75x = 77,799,550.78
  5. Step 5: Solve for x
    x = 77,799,550.78/7,551.75
  6. Step 6: Final answer
    x = 10,302.19

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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.