Home / 1,975.65-2,722.98-1,443.66

Finding the Fourth Proportional to 1,975.65, 2,722.98 and 1,443.66

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Solution

The fourth proportional to 1,975.65, 2,722.98 and 1,443.66 is: 1,989.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,975.65 : 2,722.98 = 1,443.66 : x
  2. Step 2: Convert to fraction form
    1,975.65/2,722.98 = 1,443.66/x
  3. Step 3: Cross multiply
    1,975.65x = 2,722.98 × 1,443.66
  4. Step 4: Simplify right side
    1,975.65x = 3,931,057.31
  5. Step 5: Solve for x
    x = 3,931,057.31/1,975.65
  6. Step 6: Final answer
    x = 1,989.75

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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.