Home / 1,815.90-2,718.99-1,448.70

Finding the Fourth Proportional to 1,815.90, 2,718.99 and 1,448.70

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Solution

The fourth proportional to 1,815.90, 2,718.99 and 1,448.70 is: 2,169.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,815.90 : 2,718.99 = 1,448.70 : x
  2. Step 2: Convert to fraction form
    1,815.90/2,718.99 = 1,448.70/x
  3. Step 3: Cross multiply
    1,815.90x = 2,718.99 × 1,448.70
  4. Step 4: Simplify right side
    1,815.90x = 3,939,000.81
  5. Step 5: Solve for x
    x = 3,939,000.81/1,815.90
  6. Step 6: Final answer
    x = 2,169.17

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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.