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Finding the Fourth Proportional to 8,673.30, 11,971.17 and 5,138.10

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Solution

The fourth proportional to 8,673.30, 11,971.17 and 5,138.10 is: 7,091.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,673.30 : 11,971.17 = 5,138.10 : x
  2. Step 2: Convert to fraction form
    8,673.30/11,971.17 = 5,138.10/x
  3. Step 3: Cross multiply
    8,673.30x = 11,971.17 × 5,138.10
  4. Step 4: Simplify right side
    8,673.30x = 61,509,068.58
  5. Step 5: Solve for x
    x = 61,509,068.58/8,673.30
  6. Step 6: Final answer
    x = 7,091.77

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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.