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Finding the Fourth Proportional to 9,893.79, 13,647.28 and 6,118.11

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Solution

The fourth proportional to 9,893.79, 13,647.28 and 6,118.11 is: 8,439.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,893.79 : 13,647.28 = 6,118.11 : x
  2. Step 2: Convert to fraction form
    9,893.79/13,647.28 = 6,118.11/x
  3. Step 3: Cross multiply
    9,893.79x = 13,647.28 × 6,118.11
  4. Step 4: Simplify right side
    9,893.79x = 83,495,560.24
  5. Step 5: Solve for x
    x = 83,495,560.24/9,893.79
  6. Step 6: Final answer
    x = 8,439.19

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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.