Home / 8,145.53-12,215.85-4,247.81

Finding the Fourth Proportional to 8,145.53, 12,215.85 and 4,247.81

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Solution

The fourth proportional to 8,145.53, 12,215.85 and 4,247.81 is: 6,370.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,145.53 : 12,215.85 = 4,247.81 : x
  2. Step 2: Convert to fraction form
    8,145.53/12,215.85 = 4,247.81/x
  3. Step 3: Cross multiply
    8,145.53x = 12,215.85 × 4,247.81
  4. Step 4: Simplify right side
    8,145.53x = 51,890,548.71
  5. Step 5: Solve for x
    x = 51,890,548.71/8,145.53
  6. Step 6: Final answer
    x = 6,370.44

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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.