Home / 1,618.38-2,230.91-1,170.05

Finding the Fourth Proportional to 1,618.38, 2,230.91 and 1,170.05

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Solution

The fourth proportional to 1,618.38, 2,230.91 and 1,170.05 is: 1,612.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,618.38 : 2,230.91 = 1,170.05 : x
  2. Step 2: Convert to fraction form
    1,618.38/2,230.91 = 1,170.05/x
  3. Step 3: Cross multiply
    1,618.38x = 2,230.91 × 1,170.05
  4. Step 4: Simplify right side
    1,618.38x = 2,610,266.10
  5. Step 5: Solve for x
    x = 2,610,266.10/1,618.38
  6. Step 6: Final answer
    x = 1,612.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.