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Finding the Fourth Proportional to 8,580.51, 11,856.51 and 6,696.90

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Solution

The fourth proportional to 8,580.51, 11,856.51 and 6,696.90 is: 9,253.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,580.51 : 11,856.51 = 6,696.90 : x
  2. Step 2: Convert to fraction form
    8,580.51/11,856.51 = 6,696.90/x
  3. Step 3: Cross multiply
    8,580.51x = 11,856.51 × 6,696.90
  4. Step 4: Simplify right side
    8,580.51x = 79,401,861.82
  5. Step 5: Solve for x
    x = 79,401,861.82/8,580.51
  6. Step 6: Final answer
    x = 9,253.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.