Home / 1,394.12-2,087.87-1,210.52

Finding the Fourth Proportional to 1,394.12, 2,087.87 and 1,210.52

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Solution

The fourth proportional to 1,394.12, 2,087.87 and 1,210.52 is: 1,812.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,394.12 : 2,087.87 = 1,210.52 : x
  2. Step 2: Convert to fraction form
    1,394.12/2,087.87 = 1,210.52/x
  3. Step 3: Cross multiply
    1,394.12x = 2,087.87 × 1,210.52
  4. Step 4: Simplify right side
    1,394.12x = 2,527,397.95
  5. Step 5: Solve for x
    x = 2,527,397.95/1,394.12
  6. Step 6: Final answer
    x = 1,812.90

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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.