Home / 2,215.96-3,058.26-1,377.20

Finding the Fourth Proportional to 2,215.96, 3,058.26 and 1,377.20

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Solution

The fourth proportional to 2,215.96, 3,058.26 and 1,377.20 is: 1,900.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,215.96 : 3,058.26 = 1,377.20 : x
  2. Step 2: Convert to fraction form
    2,215.96/3,058.26 = 1,377.20/x
  3. Step 3: Cross multiply
    2,215.96x = 3,058.26 × 1,377.20
  4. Step 4: Simplify right side
    2,215.96x = 4,211,835.67
  5. Step 5: Solve for x
    x = 4,211,835.67/2,215.96
  6. Step 6: Final answer
    x = 1,900.68

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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.