Home / 2,278.56-3,425.40-1,870.74

Finding the Fourth Proportional to 2,278.56, 3,425.40 and 1,870.74

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Solution

The fourth proportional to 2,278.56, 3,425.40 and 1,870.74 is: 2,812.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,278.56 : 3,425.40 = 1,870.74 : x
  2. Step 2: Convert to fraction form
    2,278.56/3,425.40 = 1,870.74/x
  3. Step 3: Cross multiply
    2,278.56x = 3,425.40 × 1,870.74
  4. Step 4: Simplify right side
    2,278.56x = 6,408,032.80
  5. Step 5: Solve for x
    x = 6,408,032.80/2,278.56
  6. Step 6: Final answer
    x = 2,812.32

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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.