Home / 5,247.58-7,869.32-2,126.78

Finding the Fourth Proportional to 5,247.58, 7,869.32 and 2,126.78

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Solution

The fourth proportional to 5,247.58, 7,869.32 and 2,126.78 is: 3,189.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,247.58 : 7,869.32 = 2,126.78 : x
  2. Step 2: Convert to fraction form
    5,247.58/7,869.32 = 2,126.78/x
  3. Step 3: Cross multiply
    5,247.58x = 7,869.32 × 2,126.78
  4. Step 4: Simplify right side
    5,247.58x = 16,736,312.39
  5. Step 5: Solve for x
    x = 16,736,312.39/5,247.58
  6. Step 6: Final answer
    x = 3,189.34

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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.