Home / 2,989.51-4,125.48-1,663.18

Finding the Fourth Proportional to 2,989.51, 4,125.48 and 1,663.18

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Solution

The fourth proportional to 2,989.51, 4,125.48 and 1,663.18 is: 2,295.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,989.51 : 4,125.48 = 1,663.18 : x
  2. Step 2: Convert to fraction form
    2,989.51/4,125.48 = 1,663.18/x
  3. Step 3: Cross multiply
    2,989.51x = 4,125.48 × 1,663.18
  4. Step 4: Simplify right side
    2,989.51x = 6,861,431.84
  5. Step 5: Solve for x
    x = 6,861,431.84/2,989.51
  6. Step 6: Final answer
    x = 2,295.17

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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.