Home / 1,214.06-1,821.10-1,116.86

Finding the Fourth Proportional to 1,214.06, 1,821.10 and 1,116.86

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Solution

The fourth proportional to 1,214.06, 1,821.10 and 1,116.86 is: 1,675.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,214.06 : 1,821.10 = 1,116.86 : x
  2. Step 2: Convert to fraction form
    1,214.06/1,821.10 = 1,116.86/x
  3. Step 3: Cross multiply
    1,214.06x = 1,821.10 × 1,116.86
  4. Step 4: Simplify right side
    1,214.06x = 2,033,913.75
  5. Step 5: Solve for x
    x = 2,033,913.75/1,214.06
  6. Step 6: Final answer
    x = 1,675.30

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Similar ratio
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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.