Home / 2,790.40-3,852.42-1,743.88

Finding the Fourth Proportional to 2,790.40, 3,852.42 and 1,743.88

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Solution

The fourth proportional to 2,790.40, 3,852.42 and 1,743.88 is: 2,407.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,790.40 : 3,852.42 = 1,743.88 : x
  2. Step 2: Convert to fraction form
    2,790.40/3,852.42 = 1,743.88/x
  3. Step 3: Cross multiply
    2,790.40x = 3,852.42 × 1,743.88
  4. Step 4: Simplify right side
    2,790.40x = 6,718,158.19
  5. Step 5: Solve for x
    x = 6,718,158.19/2,790.40
  6. Step 6: Final answer
    x = 2,407.60

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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.