Home / 8,782.56-12,111.68-5,245.44

Finding the Fourth Proportional to 8,782.56, 12,111.68 and 5,245.44

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Solution

The fourth proportional to 8,782.56, 12,111.68 and 5,245.44 is: 7,233.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,782.56 : 12,111.68 = 5,245.44 : x
  2. Step 2: Convert to fraction form
    8,782.56/12,111.68 = 5,245.44/x
  3. Step 3: Cross multiply
    8,782.56x = 12,111.68 × 5,245.44
  4. Step 4: Simplify right side
    8,782.56x = 63,531,090.74
  5. Step 5: Solve for x
    x = 63,531,090.74/8,782.56
  6. Step 6: Final answer
    x = 7,233.78

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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.