Home / 2,688.59-4,034.13-1,228.19

Finding the Fourth Proportional to 2,688.59, 4,034.13 and 1,228.19

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Solution

The fourth proportional to 2,688.59, 4,034.13 and 1,228.19 is: 1,842.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,688.59 : 4,034.13 = 1,228.19 : x
  2. Step 2: Convert to fraction form
    2,688.59/4,034.13 = 1,228.19/x
  3. Step 3: Cross multiply
    2,688.59x = 4,034.13 × 1,228.19
  4. Step 4: Simplify right side
    2,688.59x = 4,954,678.12
  5. Step 5: Solve for x
    x = 4,954,678.12/2,688.59
  6. Step 6: Final answer
    x = 1,842.85

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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.