Home / 7,087.59-9,780.46-3,900.34

Finding the Fourth Proportional to 7,087.59, 9,780.46 and 3,900.34

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Solution

The fourth proportional to 7,087.59, 9,780.46 and 3,900.34 is: 5,382.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,087.59 : 9,780.46 = 3,900.34 : x
  2. Step 2: Convert to fraction form
    7,087.59/9,780.46 = 3,900.34/x
  3. Step 3: Cross multiply
    7,087.59x = 9,780.46 × 3,900.34
  4. Step 4: Simplify right side
    7,087.59x = 38,147,119.36
  5. Step 5: Solve for x
    x = 38,147,119.36/7,087.59
  6. Step 6: Final answer
    x = 5,382.24

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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.