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Finding the Fourth Proportional to 8,991.78, 13,491.56 and 4,826.93

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Solution

The fourth proportional to 8,991.78, 13,491.56 and 4,826.93 is: 7,242.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,991.78 : 13,491.56 = 4,826.93 : x
  2. Step 2: Convert to fraction form
    8,991.78/13,491.56 = 4,826.93/x
  3. Step 3: Cross multiply
    8,991.78x = 13,491.56 × 4,826.93
  4. Step 4: Simplify right side
    8,991.78x = 65,122,760.32
  5. Step 5: Solve for x
    x = 65,122,760.32/8,991.78
  6. Step 6: Final answer
    x = 7,242.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.