Home / 2,478.94-3,420.90-1,359.92

Finding the Fourth Proportional to 2,478.94, 3,420.90 and 1,359.92

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Solution

The fourth proportional to 2,478.94, 3,420.90 and 1,359.92 is: 1,876.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,478.94 : 3,420.90 = 1,359.92 : x
  2. Step 2: Convert to fraction form
    2,478.94/3,420.90 = 1,359.92/x
  3. Step 3: Cross multiply
    2,478.94x = 3,420.90 × 1,359.92
  4. Step 4: Simplify right side
    2,478.94x = 4,652,158.88
  5. Step 5: Solve for x
    x = 4,652,158.88/2,478.94
  6. Step 6: Final answer
    x = 1,876.67

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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.