Home / 1,433.07-2,138.90-1,317.65

Finding the Fourth Proportional to 1,433.07, 2,138.90 and 1,317.65

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Solution

The fourth proportional to 1,433.07, 2,138.90 and 1,317.65 is: 1,966.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,433.07 : 2,138.90 = 1,317.65 : x
  2. Step 2: Convert to fraction form
    1,433.07/2,138.90 = 1,317.65/x
  3. Step 3: Cross multiply
    1,433.07x = 2,138.90 × 1,317.65
  4. Step 4: Simplify right side
    1,433.07x = 2,818,304.30
  5. Step 5: Solve for x
    x = 2,818,304.30/1,433.07
  6. Step 6: Final answer
    x = 1,966.62

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.