Home / 1,403.74-2,101.83-1,317.16

Finding the Fourth Proportional to 1,403.74, 2,101.83 and 1,317.16

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Solution

The fourth proportional to 1,403.74, 2,101.83 and 1,317.16 is: 1,972.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,403.74 : 2,101.83 = 1,317.16 : x
  2. Step 2: Convert to fraction form
    1,403.74/2,101.83 = 1,317.16/x
  3. Step 3: Cross multiply
    1,403.74x = 2,101.83 × 1,317.16
  4. Step 4: Simplify right side
    1,403.74x = 2,768,446.40
  5. Step 5: Solve for x
    x = 2,768,446.40/1,403.74
  6. Step 6: Final answer
    x = 1,972.19

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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.