Home / 2,215.40-3,314.93-1,338.30

Finding the Fourth Proportional to 2,215.40, 3,314.93 and 1,338.30

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Solution

The fourth proportional to 2,215.40, 3,314.93 and 1,338.30 is: 2,002.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,215.40 : 3,314.93 = 1,338.30 : x
  2. Step 2: Convert to fraction form
    2,215.40/3,314.93 = 1,338.30/x
  3. Step 3: Cross multiply
    2,215.40x = 3,314.93 × 1,338.30
  4. Step 4: Simplify right side
    2,215.40x = 4,436,364.13
  5. Step 5: Solve for x
    x = 4,436,364.13/2,215.40
  6. Step 6: Final answer
    x = 2,002.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.