Home / 1,458.14-2,187.20-1,214.15

Finding the Fourth Proportional to 1,458.14, 2,187.20 and 1,214.15

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Solution

The fourth proportional to 1,458.14, 2,187.20 and 1,214.15 is: 1,821.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,458.14 : 2,187.20 = 1,214.15 : x
  2. Step 2: Convert to fraction form
    1,458.14/2,187.20 = 1,214.15/x
  3. Step 3: Cross multiply
    1,458.14x = 2,187.20 × 1,214.15
  4. Step 4: Simplify right side
    1,458.14x = 2,655,571.87
  5. Step 5: Solve for x
    x = 2,655,571.87/1,458.14
  6. Step 6: Final answer
    x = 1,821.21

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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.