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Finding the Fourth Proportional to 8,991.83, 12,409.26 and 5,012.93

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Solution

The fourth proportional to 8,991.83, 12,409.26 and 5,012.93 is: 6,918.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,991.83 : 12,409.26 = 5,012.93 : x
  2. Step 2: Convert to fraction form
    8,991.83/12,409.26 = 5,012.93/x
  3. Step 3: Cross multiply
    8,991.83x = 12,409.26 × 5,012.93
  4. Step 4: Simplify right side
    8,991.83x = 62,206,689.69
  5. Step 5: Solve for x
    x = 62,206,689.69/8,991.83
  6. Step 6: Final answer
    x = 6,918.14

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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.