Home / 3,470.30-5,207.48-1,280.55

Finding the Fourth Proportional to 3,470.30, 5,207.48 and 1,280.55

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Solution

The fourth proportional to 3,470.30, 5,207.48 and 1,280.55 is: 1,921.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,470.30 : 5,207.48 = 1,280.55 : x
  2. Step 2: Convert to fraction form
    3,470.30/5,207.48 = 1,280.55/x
  3. Step 3: Cross multiply
    3,470.30x = 5,207.48 × 1,280.55
  4. Step 4: Simplify right side
    3,470.30x = 6,668,438.51
  5. Step 5: Solve for x
    x = 6,668,438.51/3,470.30
  6. Step 6: Final answer
    x = 1,921.57

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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.