Home / 2,612.81-3,605.87-1,618.68

Finding the Fourth Proportional to 2,612.81, 3,605.87 and 1,618.68

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Solution

The fourth proportional to 2,612.81, 3,605.87 and 1,618.68 is: 2,233.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,612.81 : 3,605.87 = 1,618.68 : x
  2. Step 2: Convert to fraction form
    2,612.81/3,605.87 = 1,618.68/x
  3. Step 3: Cross multiply
    2,612.81x = 3,605.87 × 1,618.68
  4. Step 4: Simplify right side
    2,612.81x = 5,836,758.12
  5. Step 5: Solve for x
    x = 5,836,758.12/2,612.81
  6. Step 6: Final answer
    x = 2,233.90

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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.