Home / 1,419.10-2,124.60-1,378.60

Finding the Fourth Proportional to 1,419.10, 2,124.60 and 1,378.60

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Solution

The fourth proportional to 1,419.10, 2,124.60 and 1,378.60 is: 2,063.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,419.10 : 2,124.60 = 1,378.60 : x
  2. Step 2: Convert to fraction form
    1,419.10/2,124.60 = 1,378.60/x
  3. Step 3: Cross multiply
    1,419.10x = 2,124.60 × 1,378.60
  4. Step 4: Simplify right side
    1,419.10x = 2,928,973.56
  5. Step 5: Solve for x
    x = 2,928,973.56/1,419.10
  6. Step 6: Final answer
    x = 2,063.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.