Home / 2,478.54-3,420.36-1,359.53

Finding the Fourth Proportional to 2,478.54, 3,420.36 and 1,359.53

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Solution

The fourth proportional to 2,478.54, 3,420.36 and 1,359.53 is: 1,876.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,478.54 : 3,420.36 = 1,359.53 : x
  2. Step 2: Convert to fraction form
    2,478.54/3,420.36 = 1,359.53/x
  3. Step 3: Cross multiply
    2,478.54x = 3,420.36 × 1,359.53
  4. Step 4: Simplify right side
    2,478.54x = 4,650,064.93
  5. Step 5: Solve for x
    x = 4,650,064.93/2,478.54
  6. Step 6: Final answer
    x = 1,876.13

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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.