Home / 5,091.20-7,637.40-1,628

Finding the Fourth Proportional to 5,091.20, 7,637.40 and 1,628

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Solution

The fourth proportional to 5,091.20, 7,637.40 and 1,628 is: 2,442.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,091.20 : 7,637.40 = 1,628 : x
  2. Step 2: Convert to fraction form
    5,091.20/7,637.40 = 1,628/x
  3. Step 3: Cross multiply
    5,091.20x = 7,637.40 × 1,628
  4. Step 4: Simplify right side
    5,091.20x = 12,433,687.20
  5. Step 5: Solve for x
    x = 12,433,687.20/5,091.20
  6. Step 6: Final answer
    x = 2,442.19

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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.