Home / 2,516.78-3,774.36-1,200.40

Finding the Fourth Proportional to 2,516.78, 3,774.36 and 1,200.40

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Solution

The fourth proportional to 2,516.78, 3,774.36 and 1,200.40 is: 1,800.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,516.78 : 3,774.36 = 1,200.40 : x
  2. Step 2: Convert to fraction form
    2,516.78/3,774.36 = 1,200.40/x
  3. Step 3: Cross multiply
    2,516.78x = 3,774.36 × 1,200.40
  4. Step 4: Simplify right side
    2,516.78x = 4,530,741.74
  5. Step 5: Solve for x
    x = 4,530,741.74/2,516.78
  6. Step 6: Final answer
    x = 1,800.21

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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.