Home / 8,455.31-12,686.21-3,523.63

Finding the Fourth Proportional to 8,455.31, 12,686.21 and 3,523.63

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Solution

The fourth proportional to 8,455.31, 12,686.21 and 3,523.63 is: 5,286.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,455.31 : 12,686.21 = 3,523.63 : x
  2. Step 2: Convert to fraction form
    8,455.31/12,686.21 = 3,523.63/x
  3. Step 3: Cross multiply
    8,455.31x = 12,686.21 × 3,523.63
  4. Step 4: Simplify right side
    8,455.31x = 44,701,510.14
  5. Step 5: Solve for x
    x = 44,701,510.14/8,455.31
  6. Step 6: Final answer
    x = 5,286.80

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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.