Home / 2,518.40-3,777.12-1,219.28

Finding the Fourth Proportional to 2,518.40, 3,777.12 and 1,219.28

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Solution

The fourth proportional to 2,518.40, 3,777.12 and 1,219.28 is: 1,828.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,518.40 : 3,777.12 = 1,219.28 : x
  2. Step 2: Convert to fraction form
    2,518.40/3,777.12 = 1,219.28/x
  3. Step 3: Cross multiply
    2,518.40x = 3,777.12 × 1,219.28
  4. Step 4: Simplify right side
    2,518.40x = 4,605,366.87
  5. Step 5: Solve for x
    x = 4,605,366.87/2,518.40
  6. Step 6: Final answer
    x = 1,828.69

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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.