Home / 2,811.20-4,216.40-962.38

Finding the Fourth Proportional to 2,811.20, 4,216.40 and 962.38

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Solution

The fourth proportional to 2,811.20, 4,216.40 and 962.38 is: 1,443.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,811.20 : 4,216.40 = 962.38 : x
  2. Step 2: Convert to fraction form
    2,811.20/4,216.40 = 962.38/x
  3. Step 3: Cross multiply
    2,811.20x = 4,216.40 × 962.38
  4. Step 4: Simplify right side
    2,811.20x = 4,057,779.03
  5. Step 5: Solve for x
    x = 4,057,779.03/2,811.20
  6. Step 6: Final answer
    x = 1,443.43

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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.