Home / 1,688.22-2,329.45-1,091.53

Finding the Fourth Proportional to 1,688.22, 2,329.45 and 1,091.53

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Solution

The fourth proportional to 1,688.22, 2,329.45 and 1,091.53 is: 1,506.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,688.22 : 2,329.45 = 1,091.53 : x
  2. Step 2: Convert to fraction form
    1,688.22/2,329.45 = 1,091.53/x
  3. Step 3: Cross multiply
    1,688.22x = 2,329.45 × 1,091.53
  4. Step 4: Simplify right side
    1,688.22x = 2,542,659.28
  5. Step 5: Solve for x
    x = 2,542,659.28/1,688.22
  6. Step 6: Final answer
    x = 1,506.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.