Home / 1,679.89-2,318.07-933.73

Finding the Fourth Proportional to 1,679.89, 2,318.07 and 933.73

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Solution

The fourth proportional to 1,679.89, 2,318.07 and 933.73 is: 1,288.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,679.89 : 2,318.07 = 933.73 : x
  2. Step 2: Convert to fraction form
    1,679.89/2,318.07 = 933.73/x
  3. Step 3: Cross multiply
    1,679.89x = 2,318.07 × 933.73
  4. Step 4: Simplify right side
    1,679.89x = 2,164,457.90
  5. Step 5: Solve for x
    x = 2,164,457.90/1,679.89
  6. Step 6: Final answer
    x = 1,288.45

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1.5x scale

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.