Home / 2,989.91-4,126.07-1,663.64

Finding the Fourth Proportional to 2,989.91, 4,126.07 and 1,663.64

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Solution

The fourth proportional to 2,989.91, 4,126.07 and 1,663.64 is: 2,295.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,989.91 : 4,126.07 = 1,663.64 : x
  2. Step 2: Convert to fraction form
    2,989.91/4,126.07 = 1,663.64/x
  3. Step 3: Cross multiply
    2,989.91x = 4,126.07 × 1,663.64
  4. Step 4: Simplify right side
    2,989.91x = 6,864,294.10
  5. Step 5: Solve for x
    x = 6,864,294.10/2,989.91
  6. Step 6: Final answer
    x = 2,295.82

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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.