Home / 2,214.17-3,317.64-1,290.50

Finding the Fourth Proportional to 2,214.17, 3,317.64 and 1,290.50

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Solution

The fourth proportional to 2,214.17, 3,317.64 and 1,290.50 is: 1,933.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,214.17 : 3,317.64 = 1,290.50 : x
  2. Step 2: Convert to fraction form
    2,214.17/3,317.64 = 1,290.50/x
  3. Step 3: Cross multiply
    2,214.17x = 3,317.64 × 1,290.50
  4. Step 4: Simplify right side
    2,214.17x = 4,281,422.71
  5. Step 5: Solve for x
    x = 4,281,422.71/2,214.17
  6. Step 6: Final answer
    x = 1,933.65

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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.