Home / 2,989.52-4,125.54-1,663.21

Finding the Fourth Proportional to 2,989.52, 4,125.54 and 1,663.21

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Solution

The fourth proportional to 2,989.52, 4,125.54 and 1,663.21 is: 2,295.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,989.52 : 4,125.54 = 1,663.21 : x
  2. Step 2: Convert to fraction form
    2,989.52/4,125.54 = 1,663.21/x
  3. Step 3: Cross multiply
    2,989.52x = 4,125.54 × 1,663.21
  4. Step 4: Simplify right side
    2,989.52x = 6,861,639.38
  5. Step 5: Solve for x
    x = 6,861,639.38/2,989.52
  6. Step 6: Final answer
    x = 2,295.23

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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.