Home / 7,286.40-10,065.60-6,249.60

Finding the Fourth Proportional to 7,286.40, 10,065.60 and 6,249.60

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Solution

The fourth proportional to 7,286.40, 10,065.60 and 6,249.60 is: 8,633.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,286.40 : 10,065.60 = 6,249.60 : x
  2. Step 2: Convert to fraction form
    7,286.40/10,065.60 = 6,249.60/x
  3. Step 3: Cross multiply
    7,286.40x = 10,065.60 × 6,249.60
  4. Step 4: Simplify right side
    7,286.40x = 62,905,973.76
  5. Step 5: Solve for x
    x = 62,905,973.76/7,286.40
  6. Step 6: Final answer
    x = 8,633.34

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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.