Home / 2,690.87-4,036.91-1,459.40

Finding the Fourth Proportional to 2,690.87, 4,036.91 and 1,459.40

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Solution

The fourth proportional to 2,690.87, 4,036.91 and 1,459.40 is: 2,189.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,690.87 : 4,036.91 = 1,459.40 : x
  2. Step 2: Convert to fraction form
    2,690.87/4,036.91 = 1,459.40/x
  3. Step 3: Cross multiply
    2,690.87x = 4,036.91 × 1,459.40
  4. Step 4: Simplify right side
    2,690.87x = 5,891,438.97
  5. Step 5: Solve for x
    x = 5,891,438.97/2,690.87
  6. Step 6: Final answer
    x = 2,189.42

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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.