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Finding the Fourth Proportional to 8,879.15, 12,254.09 and 6,637.07

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Solution

The fourth proportional to 8,879.15, 12,254.09 and 6,637.07 is: 9,159.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,879.15 : 12,254.09 = 6,637.07 : x
  2. Step 2: Convert to fraction form
    8,879.15/12,254.09 = 6,637.07/x
  3. Step 3: Cross multiply
    8,879.15x = 12,254.09 × 6,637.07
  4. Step 4: Simplify right side
    8,879.15x = 81,331,250.57
  5. Step 5: Solve for x
    x = 81,331,250.57/8,879.15
  6. Step 6: Final answer
    x = 9,159.80

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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.