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Finding the Fourth Proportional to 8,586.03, 11,820.15 and 7,700.31

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Solution

The fourth proportional to 8,586.03, 11,820.15 and 7,700.31 is: 10,600.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,586.03 : 11,820.15 = 7,700.31 : x
  2. Step 2: Convert to fraction form
    8,586.03/11,820.15 = 7,700.31/x
  3. Step 3: Cross multiply
    8,586.03x = 11,820.15 × 7,700.31
  4. Step 4: Simplify right side
    8,586.03x = 91,018,819.25
  5. Step 5: Solve for x
    x = 91,018,819.25/8,586.03
  6. Step 6: Final answer
    x = 10,600.80

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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.