Home / 4,668.50-7,001.30-1,380.78

Finding the Fourth Proportional to 4,668.50, 7,001.30 and 1,380.78

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Solution

The fourth proportional to 4,668.50, 7,001.30 and 1,380.78 is: 2,070.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,668.50 : 7,001.30 = 1,380.78 : x
  2. Step 2: Convert to fraction form
    4,668.50/7,001.30 = 1,380.78/x
  3. Step 3: Cross multiply
    4,668.50x = 7,001.30 × 1,380.78
  4. Step 4: Simplify right side
    4,668.50x = 9,667,258.47
  5. Step 5: Solve for x
    x = 9,667,258.47/4,668.50
  6. Step 6: Final answer
    x = 2,070.74

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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.