Home / 2,688.88-3,708.65-1,792.21

Finding the Fourth Proportional to 2,688.88, 3,708.65 and 1,792.21

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Solution

The fourth proportional to 2,688.88, 3,708.65 and 1,792.21 is: 2,471.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,688.88 : 3,708.65 = 1,792.21 : x
  2. Step 2: Convert to fraction form
    2,688.88/3,708.65 = 1,792.21/x
  3. Step 3: Cross multiply
    2,688.88x = 3,708.65 × 1,792.21
  4. Step 4: Simplify right side
    2,688.88x = 6,646,679.62
  5. Step 5: Solve for x
    x = 6,646,679.62/2,688.88
  6. Step 6: Final answer
    x = 2,471.91

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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.