Home / 2,378.56-3,560.90-1,388.34

Finding the Fourth Proportional to 2,378.56, 3,560.90 and 1,388.34

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Solution

The fourth proportional to 2,378.56, 3,560.90 and 1,388.34 is: 2,078.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,378.56 : 3,560.90 = 1,388.34 : x
  2. Step 2: Convert to fraction form
    2,378.56/3,560.90 = 1,388.34/x
  3. Step 3: Cross multiply
    2,378.56x = 3,560.90 × 1,388.34
  4. Step 4: Simplify right side
    2,378.56x = 4,943,739.91
  5. Step 5: Solve for x
    x = 4,943,739.91/2,378.56
  6. Step 6: Final answer
    x = 2,078.46

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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.