Home / 8,640.34-12,944.84-3,964.26

Finding the Fourth Proportional to 8,640.34, 12,944.84 and 3,964.26

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Solution

The fourth proportional to 8,640.34, 12,944.84 and 3,964.26 is: 5,939.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,640.34 : 12,944.84 = 3,964.26 : x
  2. Step 2: Convert to fraction form
    8,640.34/12,944.84 = 3,964.26/x
  3. Step 3: Cross multiply
    8,640.34x = 12,944.84 × 3,964.26
  4. Step 4: Simplify right side
    8,640.34x = 51,316,711.42
  5. Step 5: Solve for x
    x = 51,316,711.42/8,640.34
  6. Step 6: Final answer
    x = 5,939.20

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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.