Home / 2,478.79-3,419.44-1,682.16

Finding the Fourth Proportional to 2,478.79, 3,419.44 and 1,682.16

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Solution

The fourth proportional to 2,478.79, 3,419.44 and 1,682.16 is: 2,320.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,478.79 : 3,419.44 = 1,682.16 : x
  2. Step 2: Convert to fraction form
    2,478.79/3,419.44 = 1,682.16/x
  3. Step 3: Cross multiply
    2,478.79x = 3,419.44 × 1,682.16
  4. Step 4: Simplify right side
    2,478.79x = 5,752,045.19
  5. Step 5: Solve for x
    x = 5,752,045.19/2,478.79
  6. Step 6: Final answer
    x = 2,320.51

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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.