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Finding the Fourth Proportional to 8,775.68, 13,168.48 and 4,879.68

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Solution

The fourth proportional to 8,775.68, 13,168.48 and 4,879.68 is: 7,322.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,775.68 : 13,168.48 = 4,879.68 : x
  2. Step 2: Convert to fraction form
    8,775.68/13,168.48 = 4,879.68/x
  3. Step 3: Cross multiply
    8,775.68x = 13,168.48 × 4,879.68
  4. Step 4: Simplify right side
    8,775.68x = 64,257,968.49
  5. Step 5: Solve for x
    x = 64,257,968.49/8,775.68
  6. Step 6: Final answer
    x = 7,322.28

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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.