Home / 3,137.90-4,330.73-1,812.13

Finding the Fourth Proportional to 3,137.90, 4,330.73 and 1,812.13

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Solution

The fourth proportional to 3,137.90, 4,330.73 and 1,812.13 is: 2,500.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,137.90 : 4,330.73 = 1,812.13 : x
  2. Step 2: Convert to fraction form
    3,137.90/4,330.73 = 1,812.13/x
  3. Step 3: Cross multiply
    3,137.90x = 4,330.73 × 1,812.13
  4. Step 4: Simplify right side
    3,137.90x = 7,847,845.75
  5. Step 5: Solve for x
    x = 7,847,845.75/3,137.90
  6. Step 6: Final answer
    x = 2,500.99

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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.