Home / 7,127.46-9,835.56-4,142.88

Finding the Fourth Proportional to 7,127.46, 9,835.56 and 4,142.88

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Solution

The fourth proportional to 7,127.46, 9,835.56 and 4,142.88 is: 5,716.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,127.46 : 9,835.56 = 4,142.88 : x
  2. Step 2: Convert to fraction form
    7,127.46/9,835.56 = 4,142.88/x
  3. Step 3: Cross multiply
    7,127.46x = 9,835.56 × 4,142.88
  4. Step 4: Simplify right side
    7,127.46x = 40,747,544.81
  5. Step 5: Solve for x
    x = 40,747,544.81/7,127.46
  6. Step 6: Final answer
    x = 5,716.98

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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.