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Finding the Fourth Proportional to 8,918.74, 13,323.87 and 5,773.12

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Solution

The fourth proportional to 8,918.74, 13,323.87 and 5,773.12 is: 8,624.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,918.74 : 13,323.87 = 5,773.12 : x
  2. Step 2: Convert to fraction form
    8,918.74/13,323.87 = 5,773.12/x
  3. Step 3: Cross multiply
    8,918.74x = 13,323.87 × 5,773.12
  4. Step 4: Simplify right side
    8,918.74x = 76,920,300.37
  5. Step 5: Solve for x
    x = 76,920,300.37/8,918.74
  6. Step 6: Final answer
    x = 8,624.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.