Home / 10,631.40-15,947.90-2,840.04

Finding the Fourth Proportional to 10,631.40, 15,947.90 and 2,840.04

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Solution

The fourth proportional to 10,631.40, 15,947.90 and 2,840.04 is: 4,260.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,631.40 : 15,947.90 = 2,840.04 : x
  2. Step 2: Convert to fraction form
    10,631.40/15,947.90 = 2,840.04/x
  3. Step 3: Cross multiply
    10,631.40x = 15,947.90 × 2,840.04
  4. Step 4: Simplify right side
    10,631.40x = 45,292,673.92
  5. Step 5: Solve for x
    x = 45,292,673.92/10,631.40
  6. Step 6: Final answer
    x = 4,260.27

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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.