Home / 2,478.19-3,419.36-1,429.64

Finding the Fourth Proportional to 2,478.19, 3,419.36 and 1,429.64

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Solution

The fourth proportional to 2,478.19, 3,419.36 and 1,429.64 is: 1,972.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,478.19 : 3,419.36 = 1,429.64 : x
  2. Step 2: Convert to fraction form
    2,478.19/3,419.36 = 1,429.64/x
  3. Step 3: Cross multiply
    2,478.19x = 3,419.36 × 1,429.64
  4. Step 4: Simplify right side
    2,478.19x = 4,888,465.95
  5. Step 5: Solve for x
    x = 4,888,465.95/2,478.19
  6. Step 6: Final answer
    x = 1,972.60

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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.