Home / 2,792.40-4,187.68-1,126.10

Finding the Fourth Proportional to 2,792.40, 4,187.68 and 1,126.10

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Solution

The fourth proportional to 2,792.40, 4,187.68 and 1,126.10 is: 1,688.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,792.40 : 4,187.68 = 1,126.10 : x
  2. Step 2: Convert to fraction form
    2,792.40/4,187.68 = 1,126.10/x
  3. Step 3: Cross multiply
    2,792.40x = 4,187.68 × 1,126.10
  4. Step 4: Simplify right side
    2,792.40x = 4,715,736.44
  5. Step 5: Solve for x
    x = 4,715,736.44/2,792.40
  6. Step 6: Final answer
    x = 1,688.77

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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.