Home / 2,784.11-3,842.15-1,605.26

Finding the Fourth Proportional to 2,784.11, 3,842.15 and 1,605.26

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Solution

The fourth proportional to 2,784.11, 3,842.15 and 1,605.26 is: 2,215.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,784.11 : 3,842.15 = 1,605.26 : x
  2. Step 2: Convert to fraction form
    2,784.11/3,842.15 = 1,605.26/x
  3. Step 3: Cross multiply
    2,784.11x = 3,842.15 × 1,605.26
  4. Step 4: Simplify right side
    2,784.11x = 6,167,649.71
  5. Step 5: Solve for x
    x = 6,167,649.71/2,784.11
  6. Step 6: Final answer
    x = 2,215.30

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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.