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Finding the Fourth Proportional to 8,686.05, 13,010.85 and 6,828.32

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Solution

The fourth proportional to 8,686.05, 13,010.85 and 6,828.32 is: 10,228.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,686.05 : 13,010.85 = 6,828.32 : x
  2. Step 2: Convert to fraction form
    8,686.05/13,010.85 = 6,828.32/x
  3. Step 3: Cross multiply
    8,686.05x = 13,010.85 × 6,828.32
  4. Step 4: Simplify right side
    8,686.05x = 88,842,182.22
  5. Step 5: Solve for x
    x = 88,842,182.22/8,686.05
  6. Step 6: Final answer
    x = 10,228.15

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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.