Home / 2,070.38-3,104.90-683.40

Finding the Fourth Proportional to 2,070.38, 3,104.90 and 683.40

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Solution

The fourth proportional to 2,070.38, 3,104.90 and 683.40 is: 1,024.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,070.38 : 3,104.90 = 683.40 : x
  2. Step 2: Convert to fraction form
    2,070.38/3,104.90 = 683.40/x
  3. Step 3: Cross multiply
    2,070.38x = 3,104.90 × 683.40
  4. Step 4: Simplify right side
    2,070.38x = 2,121,888.66
  5. Step 5: Solve for x
    x = 2,121,888.66/2,070.38
  6. Step 6: Final answer
    x = 1,024.88

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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.