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Finding the Fourth Proportional to 8,998.99, 12,418.31 and 5,020.79

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Solution

The fourth proportional to 8,998.99, 12,418.31 and 5,020.79 is: 6,928.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,998.99 : 12,418.31 = 5,020.79 : x
  2. Step 2: Convert to fraction form
    8,998.99/12,418.31 = 5,020.79/x
  3. Step 3: Cross multiply
    8,998.99x = 12,418.31 × 5,020.79
  4. Step 4: Simplify right side
    8,998.99x = 62,349,677.13
  5. Step 5: Solve for x
    x = 62,349,677.13/8,998.99
  6. Step 6: Final answer
    x = 6,928.52

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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.