Home / 2,800.90-4,199.94-1,631.28

Finding the Fourth Proportional to 2,800.90, 4,199.94 and 1,631.28

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Solution

The fourth proportional to 2,800.90, 4,199.94 and 1,631.28 is: 2,446.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,800.90 : 4,199.94 = 1,631.28 : x
  2. Step 2: Convert to fraction form
    2,800.90/4,199.94 = 1,631.28/x
  3. Step 3: Cross multiply
    2,800.90x = 4,199.94 × 1,631.28
  4. Step 4: Simplify right side
    2,800.90x = 6,851,278.12
  5. Step 5: Solve for x
    x = 6,851,278.12/2,800.90
  6. Step 6: Final answer
    x = 2,446.10

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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.