Home / 1,635.10-2,448.60-1,311.10

Finding the Fourth Proportional to 1,635.10, 2,448.60 and 1,311.10

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Solution

The fourth proportional to 1,635.10, 2,448.60 and 1,311.10 is: 1,963.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,635.10 : 2,448.60 = 1,311.10 : x
  2. Step 2: Convert to fraction form
    1,635.10/2,448.60 = 1,311.10/x
  3. Step 3: Cross multiply
    1,635.10x = 2,448.60 × 1,311.10
  4. Step 4: Simplify right side
    1,635.10x = 3,210,359.46
  5. Step 5: Solve for x
    x = 3,210,359.46/1,635.10
  6. Step 6: Final answer
    x = 1,963.40

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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.