Home / 3,404.38-4,698.28-1,912.40

Finding the Fourth Proportional to 3,404.38, 4,698.28 and 1,912.40

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Solution

The fourth proportional to 3,404.38, 4,698.28 and 1,912.40 is: 2,639.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,404.38 : 4,698.28 = 1,912.40 : x
  2. Step 2: Convert to fraction form
    3,404.38/4,698.28 = 1,912.40/x
  3. Step 3: Cross multiply
    3,404.38x = 4,698.28 × 1,912.40
  4. Step 4: Simplify right side
    3,404.38x = 8,984,990.67
  5. Step 5: Solve for x
    x = 8,984,990.67/3,404.38
  6. Step 6: Final answer
    x = 2,639.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.