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Finding the Fourth Proportional to 8,991.93, 12,408.92 and 5,013.30

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Solution

The fourth proportional to 8,991.93, 12,408.92 and 5,013.30 is: 6,918.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,991.93 : 12,408.92 = 5,013.30 : x
  2. Step 2: Convert to fraction form
    8,991.93/12,408.92 = 5,013.30/x
  3. Step 3: Cross multiply
    8,991.93x = 12,408.92 × 5,013.30
  4. Step 4: Simplify right side
    8,991.93x = 62,209,638.64
  5. Step 5: Solve for x
    x = 62,209,638.64/8,991.93
  6. Step 6: Final answer
    x = 6,918.39

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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.