Home / 2,215.17-3,319.14-1,291.50

Finding the Fourth Proportional to 2,215.17, 3,319.14 and 1,291.50

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Solution

The fourth proportional to 2,215.17, 3,319.14 and 1,291.50 is: 1,935.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,215.17 : 3,319.14 = 1,291.50 : x
  2. Step 2: Convert to fraction form
    2,215.17/3,319.14 = 1,291.50/x
  3. Step 3: Cross multiply
    2,215.17x = 3,319.14 × 1,291.50
  4. Step 4: Simplify right side
    2,215.17x = 4,286,669.31
  5. Step 5: Solve for x
    x = 4,286,669.31/2,215.17
  6. Step 6: Final answer
    x = 1,935.14

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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.