Home / 2,790.80-3,851.30-1,612.24

Finding the Fourth Proportional to 2,790.80, 3,851.30 and 1,612.24

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Solution

The fourth proportional to 2,790.80, 3,851.30 and 1,612.24 is: 2,224.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,790.80 : 3,851.30 = 1,612.24 : x
  2. Step 2: Convert to fraction form
    2,790.80/3,851.30 = 1,612.24/x
  3. Step 3: Cross multiply
    2,790.80x = 3,851.30 × 1,612.24
  4. Step 4: Simplify right side
    2,790.80x = 6,209,219.91
  5. Step 5: Solve for x
    x = 6,209,219.91/2,790.80
  6. Step 6: Final answer
    x = 2,224.89

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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.