Home / 4,725.12-6,520.98-3,129

Finding the Fourth Proportional to 4,725.12, 6,520.98 and 3,129

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Solution

The fourth proportional to 4,725.12, 6,520.98 and 3,129 is: 4,318.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,725.12 : 6,520.98 = 3,129 : x
  2. Step 2: Convert to fraction form
    4,725.12/6,520.98 = 3,129/x
  3. Step 3: Cross multiply
    4,725.12x = 6,520.98 × 3,129
  4. Step 4: Simplify right side
    4,725.12x = 20,404,146.42
  5. Step 5: Solve for x
    x = 20,404,146.42/4,725.12
  6. Step 6: Final answer
    x = 4,318.23

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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.