Home / 3,470.42-5,207.67-1,280.68

Finding the Fourth Proportional to 3,470.42, 5,207.67 and 1,280.68

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Solution

The fourth proportional to 3,470.42, 5,207.67 and 1,280.68 is: 1,921.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,470.42 : 5,207.67 = 1,280.68 : x
  2. Step 2: Convert to fraction form
    3,470.42/5,207.67 = 1,280.68/x
  3. Step 3: Cross multiply
    3,470.42x = 5,207.67 × 1,280.68
  4. Step 4: Simplify right side
    3,470.42x = 6,669,345.80
  5. Step 5: Solve for x
    x = 6,669,345.80/3,470.42
  6. Step 6: Final answer
    x = 1,921.77

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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.