Home / 6,686.20-10,007.70-5,217.40

Finding the Fourth Proportional to 6,686.20, 10,007.70 and 5,217.40

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Solution

The fourth proportional to 6,686.20, 10,007.70 and 5,217.40 is: 7,809.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,686.20 : 10,007.70 = 5,217.40 : x
  2. Step 2: Convert to fraction form
    6,686.20/10,007.70 = 5,217.40/x
  3. Step 3: Cross multiply
    6,686.20x = 10,007.70 × 5,217.40
  4. Step 4: Simplify right side
    6,686.20x = 52,214,173.98
  5. Step 5: Solve for x
    x = 52,214,173.98/6,686.20
  6. Step 6: Final answer
    x = 7,809.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.