Home / 2,989.68-4,125.69-1,663.38

Finding the Fourth Proportional to 2,989.68, 4,125.69 and 1,663.38

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Solution

The fourth proportional to 2,989.68, 4,125.69 and 1,663.38 is: 2,295.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,989.68 : 4,125.69 = 1,663.38 : x
  2. Step 2: Convert to fraction form
    2,989.68/4,125.69 = 1,663.38/x
  3. Step 3: Cross multiply
    2,989.68x = 4,125.69 × 1,663.38
  4. Step 4: Simplify right side
    2,989.68x = 6,862,590.23
  5. Step 5: Solve for x
    x = 6,862,590.23/2,989.68
  6. Step 6: Final answer
    x = 2,295.43

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1.5x scale

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.