Home / 1,380.44-2,071.08-558.56

Finding the Fourth Proportional to 1,380.44, 2,071.08 and 558.56

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Solution

The fourth proportional to 1,380.44, 2,071.08 and 558.56 is: 838.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,380.44 : 2,071.08 = 558.56 : x
  2. Step 2: Convert to fraction form
    1,380.44/2,071.08 = 558.56/x
  3. Step 3: Cross multiply
    1,380.44x = 2,071.08 × 558.56
  4. Step 4: Simplify right side
    1,380.44x = 1,156,822.44
  5. Step 5: Solve for x
    x = 1,156,822.44/1,380.44
  6. Step 6: Final answer
    x = 838.01

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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.