Home / 2,317.30-3,478.65-1,330.90

Finding the Fourth Proportional to 2,317.30, 3,478.65 and 1,330.90

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Solution

The fourth proportional to 2,317.30, 3,478.65 and 1,330.90 is: 1,997.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,317.30 : 3,478.65 = 1,330.90 : x
  2. Step 2: Convert to fraction form
    2,317.30/3,478.65 = 1,330.90/x
  3. Step 3: Cross multiply
    2,317.30x = 3,478.65 × 1,330.90
  4. Step 4: Simplify right side
    2,317.30x = 4,629,735.29
  5. Step 5: Solve for x
    x = 4,629,735.29/2,317.30
  6. Step 6: Final answer
    x = 1,997.90

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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.