Home / 7,639.80-11,463.95-4,129.73

Finding the Fourth Proportional to 7,639.80, 11,463.95 and 4,129.73

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Solution

The fourth proportional to 7,639.80, 11,463.95 and 4,129.73 is: 6,196.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,639.80 : 11,463.95 = 4,129.73 : x
  2. Step 2: Convert to fraction form
    7,639.80/11,463.95 = 4,129.73/x
  3. Step 3: Cross multiply
    7,639.80x = 11,463.95 × 4,129.73
  4. Step 4: Simplify right side
    7,639.80x = 47,343,018.23
  5. Step 5: Solve for x
    x = 47,343,018.23/7,639.80
  6. Step 6: Final answer
    x = 6,196.89

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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.