Home / 2,989.64-4,125.76-1,663.40

Finding the Fourth Proportional to 2,989.64, 4,125.76 and 1,663.40

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Solution

The fourth proportional to 2,989.64, 4,125.76 and 1,663.40 is: 2,295.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,989.64 : 4,125.76 = 1,663.40 : x
  2. Step 2: Convert to fraction form
    2,989.64/4,125.76 = 1,663.40/x
  3. Step 3: Cross multiply
    2,989.64x = 4,125.76 × 1,663.40
  4. Step 4: Simplify right side
    2,989.64x = 6,862,789.18
  5. Step 5: Solve for x
    x = 6,862,789.18/2,989.64
  6. Step 6: Final answer
    x = 2,295.52

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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.