Home / 7,141.74-9,855.56-3,955.11

Finding the Fourth Proportional to 7,141.74, 9,855.56 and 3,955.11

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Solution

The fourth proportional to 7,141.74, 9,855.56 and 3,955.11 is: 5,458.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,141.74 : 9,855.56 = 3,955.11 : x
  2. Step 2: Convert to fraction form
    7,141.74/9,855.56 = 3,955.11/x
  3. Step 3: Cross multiply
    7,141.74x = 9,855.56 × 3,955.11
  4. Step 4: Simplify right side
    7,141.74x = 38,979,804.14
  5. Step 5: Solve for x
    x = 38,979,804.14/7,141.74
  6. Step 6: Final answer
    x = 5,458.03

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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.