Home / 1,615.46-2,415.88-1,245.20

Finding the Fourth Proportional to 1,615.46, 2,415.88 and 1,245.20

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Solution

The fourth proportional to 1,615.46, 2,415.88 and 1,245.20 is: 1,862.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,615.46 : 2,415.88 = 1,245.20 : x
  2. Step 2: Convert to fraction form
    1,615.46/2,415.88 = 1,245.20/x
  3. Step 3: Cross multiply
    1,615.46x = 2,415.88 × 1,245.20
  4. Step 4: Simplify right side
    1,615.46x = 3,008,253.78
  5. Step 5: Solve for x
    x = 3,008,253.78/1,615.46
  6. Step 6: Final answer
    x = 1,862.17

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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.