Home / 8,855.46-12,215.34-5,319.54

Finding the Fourth Proportional to 8,855.46, 12,215.34 and 5,319.54

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Solution

The fourth proportional to 8,855.46, 12,215.34 and 5,319.54 is: 7,337.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,855.46 : 12,215.34 = 5,319.54 : x
  2. Step 2: Convert to fraction form
    8,855.46/12,215.34 = 5,319.54/x
  3. Step 3: Cross multiply
    8,855.46x = 12,215.34 × 5,319.54
  4. Step 4: Simplify right side
    8,855.46x = 64,979,989.74
  5. Step 5: Solve for x
    x = 64,979,989.74/8,855.46
  6. Step 6: Final answer
    x = 7,337.84

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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.