Home / 2,478.86-3,420.26-1,682.28

Finding the Fourth Proportional to 2,478.86, 3,420.26 and 1,682.28

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Solution

The fourth proportional to 2,478.86, 3,420.26 and 1,682.28 is: 2,321.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,478.86 : 3,420.26 = 1,682.28 : x
  2. Step 2: Convert to fraction form
    2,478.86/3,420.26 = 1,682.28/x
  3. Step 3: Cross multiply
    2,478.86x = 3,420.26 × 1,682.28
  4. Step 4: Simplify right side
    2,478.86x = 5,753,834.99
  5. Step 5: Solve for x
    x = 5,753,834.99/2,478.86
  6. Step 6: Final answer
    x = 2,321.16

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1.5x scale

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.