Home / 7,127.96-9,835.62-3,983.72

Finding the Fourth Proportional to 7,127.96, 9,835.62 and 3,983.72

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Solution

The fourth proportional to 7,127.96, 9,835.62 and 3,983.72 is: 5,496.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,127.96 : 9,835.62 = 3,983.72 : x
  2. Step 2: Convert to fraction form
    7,127.96/9,835.62 = 3,983.72/x
  3. Step 3: Cross multiply
    7,127.96x = 9,835.62 × 3,983.72
  4. Step 4: Simplify right side
    7,127.96x = 39,182,356.11
  5. Step 5: Solve for x
    x = 39,182,356.11/7,127.96
  6. Step 6: Final answer
    x = 5,496.99

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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.