Home / 8,123.64-11,212.32-4,767.20

Finding the Fourth Proportional to 8,123.64, 11,212.32 and 4,767.20

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Solution

The fourth proportional to 8,123.64, 11,212.32 and 4,767.20 is: 6,579.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,123.64 : 11,212.32 = 4,767.20 : x
  2. Step 2: Convert to fraction form
    8,123.64/11,212.32 = 4,767.20/x
  3. Step 3: Cross multiply
    8,123.64x = 11,212.32 × 4,767.20
  4. Step 4: Simplify right side
    8,123.64x = 53,451,438.83
  5. Step 5: Solve for x
    x = 53,451,438.83/8,123.64
  6. Step 6: Final answer
    x = 6,579.74

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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.