Home / 1,465.20-2,178.94-1,419.06

Finding the Fourth Proportional to 1,465.20, 2,178.94 and 1,419.06

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Solution

The fourth proportional to 1,465.20, 2,178.94 and 1,419.06 is: 2,110.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,465.20 : 2,178.94 = 1,419.06 : x
  2. Step 2: Convert to fraction form
    1,465.20/2,178.94 = 1,419.06/x
  3. Step 3: Cross multiply
    1,465.20x = 2,178.94 × 1,419.06
  4. Step 4: Simplify right side
    1,465.20x = 3,092,046.60
  5. Step 5: Solve for x
    x = 3,092,046.60/1,465.20
  6. Step 6: Final answer
    x = 2,110.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.