Home / 8,123.12-11,209.28-4,586.64

Finding the Fourth Proportional to 8,123.12, 11,209.28 and 4,586.64

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Solution

The fourth proportional to 8,123.12, 11,209.28 and 4,586.64 is: 6,329.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,123.12 : 11,209.28 = 4,586.64 : x
  2. Step 2: Convert to fraction form
    8,123.12/11,209.28 = 4,586.64/x
  3. Step 3: Cross multiply
    8,123.12x = 11,209.28 × 4,586.64
  4. Step 4: Simplify right side
    8,123.12x = 51,412,932.02
  5. Step 5: Solve for x
    x = 51,412,932.02/8,123.12
  6. Step 6: Final answer
    x = 6,329.21

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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.