Home / 1,983.42-2,975.67-667.26

Finding the Fourth Proportional to 1,983.42, 2,975.67 and 667.26

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Solution

The fourth proportional to 1,983.42, 2,975.67 and 667.26 is: 1,001.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,983.42 : 2,975.67 = 667.26 : x
  2. Step 2: Convert to fraction form
    1,983.42/2,975.67 = 667.26/x
  3. Step 3: Cross multiply
    1,983.42x = 2,975.67 × 667.26
  4. Step 4: Simplify right side
    1,983.42x = 1,985,545.56
  5. Step 5: Solve for x
    x = 1,985,545.56/1,983.42
  6. Step 6: Final answer
    x = 1,001.07

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1.5x scale

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.