Home / 2,989.88-4,125.91-1,663.55

Finding the Fourth Proportional to 2,989.88, 4,125.91 and 1,663.55

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Solution

The fourth proportional to 2,989.88, 4,125.91 and 1,663.55 is: 2,295.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,989.88 : 4,125.91 = 1,663.55 : x
  2. Step 2: Convert to fraction form
    2,989.88/4,125.91 = 1,663.55/x
  3. Step 3: Cross multiply
    2,989.88x = 4,125.91 × 1,663.55
  4. Step 4: Simplify right side
    2,989.88x = 6,863,657.58
  5. Step 5: Solve for x
    x = 6,863,657.58/2,989.88
  6. Step 6: Final answer
    x = 2,295.63

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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.