Home / 1,688.67-2,534.25-1,155.56

Finding the Fourth Proportional to 1,688.67, 2,534.25 and 1,155.56

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Solution

The fourth proportional to 1,688.67, 2,534.25 and 1,155.56 is: 1,734.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,688.67 : 2,534.25 = 1,155.56 : x
  2. Step 2: Convert to fraction form
    1,688.67/2,534.25 = 1,155.56/x
  3. Step 3: Cross multiply
    1,688.67x = 2,534.25 × 1,155.56
  4. Step 4: Simplify right side
    1,688.67x = 2,928,465.26
  5. Step 5: Solve for x
    x = 2,928,465.26/1,688.67
  6. Step 6: Final answer
    x = 1,734.18

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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.