Home / 6,688.40-9,229.68-4,035.20

Finding the Fourth Proportional to 6,688.40, 9,229.68 and 4,035.20

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Solution

The fourth proportional to 6,688.40, 9,229.68 and 4,035.20 is: 5,568.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,688.40 : 9,229.68 = 4,035.20 : x
  2. Step 2: Convert to fraction form
    6,688.40/9,229.68 = 4,035.20/x
  3. Step 3: Cross multiply
    6,688.40x = 9,229.68 × 4,035.20
  4. Step 4: Simplify right side
    6,688.40x = 37,243,604.74
  5. Step 5: Solve for x
    x = 37,243,604.74/6,688.40
  6. Step 6: Final answer
    x = 5,568.39

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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.