Home / 2,840.24-3,919.48-1,581.26

Finding the Fourth Proportional to 2,840.24, 3,919.48 and 1,581.26

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Solution

The fourth proportional to 2,840.24, 3,919.48 and 1,581.26 is: 2,182.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,840.24 : 3,919.48 = 1,581.26 : x
  2. Step 2: Convert to fraction form
    2,840.24/3,919.48 = 1,581.26/x
  3. Step 3: Cross multiply
    2,840.24x = 3,919.48 × 1,581.26
  4. Step 4: Simplify right side
    2,840.24x = 6,197,693.39
  5. Step 5: Solve for x
    x = 6,197,693.39/2,840.24
  6. Step 6: Final answer
    x = 2,182.10

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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.