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Finding the Fourth Proportional to 8,669.88, 11,967.54 and 5,133.12

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Solution

The fourth proportional to 8,669.88, 11,967.54 and 5,133.12 is: 7,085.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,669.88 : 11,967.54 = 5,133.12 : x
  2. Step 2: Convert to fraction form
    8,669.88/11,967.54 = 5,133.12/x
  3. Step 3: Cross multiply
    8,669.88x = 11,967.54 × 5,133.12
  4. Step 4: Simplify right side
    8,669.88x = 61,430,818.92
  5. Step 5: Solve for x
    x = 61,430,818.92/8,669.88
  6. Step 6: Final answer
    x = 7,085.54

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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.