Home / 1,719.12-2,372.40-933.18

Finding the Fourth Proportional to 1,719.12, 2,372.40 and 933.18

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Solution

The fourth proportional to 1,719.12, 2,372.40 and 933.18 is: 1,287.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,719.12 : 2,372.40 = 933.18 : x
  2. Step 2: Convert to fraction form
    1,719.12/2,372.40 = 933.18/x
  3. Step 3: Cross multiply
    1,719.12x = 2,372.40 × 933.18
  4. Step 4: Simplify right side
    1,719.12x = 2,213,876.23
  5. Step 5: Solve for x
    x = 2,213,876.23/1,719.12
  6. Step 6: Final answer
    x = 1,287.80

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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.