Home / 2,215.96-3,057.99-1,271.77

Finding the Fourth Proportional to 2,215.96, 3,057.99 and 1,271.77

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Solution

The fourth proportional to 2,215.96, 3,057.99 and 1,271.77 is: 1,755.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,215.96 : 3,057.99 = 1,271.77 : x
  2. Step 2: Convert to fraction form
    2,215.96/3,057.99 = 1,271.77/x
  3. Step 3: Cross multiply
    2,215.96x = 3,057.99 × 1,271.77
  4. Step 4: Simplify right side
    2,215.96x = 3,889,047.53
  5. Step 5: Solve for x
    x = 3,889,047.53/2,215.96
  6. Step 6: Final answer
    x = 1,755.02

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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.