Home / 2,215.30-3,055.44-1,551.46

Finding the Fourth Proportional to 2,215.30, 3,055.44 and 1,551.46

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Solution

The fourth proportional to 2,215.30, 3,055.44 and 1,551.46 is: 2,139.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,215.30 : 3,055.44 = 1,551.46 : x
  2. Step 2: Convert to fraction form
    2,215.30/3,055.44 = 1,551.46/x
  3. Step 3: Cross multiply
    2,215.30x = 3,055.44 × 1,551.46
  4. Step 4: Simplify right side
    2,215.30x = 4,740,392.94
  5. Step 5: Solve for x
    x = 4,740,392.94/2,215.30
  6. Step 6: Final answer
    x = 2,139.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.