Home / 2,215.22-3,056.85-1,331.28

Finding the Fourth Proportional to 2,215.22, 3,056.85 and 1,331.28

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Solution

The fourth proportional to 2,215.22, 3,056.85 and 1,331.28 is: 1,837.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,215.22 : 3,056.85 = 1,331.28 : x
  2. Step 2: Convert to fraction form
    2,215.22/3,056.85 = 1,331.28/x
  3. Step 3: Cross multiply
    2,215.22x = 3,056.85 × 1,331.28
  4. Step 4: Simplify right side
    2,215.22x = 4,069,523.27
  5. Step 5: Solve for x
    x = 4,069,523.27/2,215.22
  6. Step 6: Final answer
    x = 1,837.08

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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.