Home / 2,989.79-4,125.81-1,663.53

Finding the Fourth Proportional to 2,989.79, 4,125.81 and 1,663.53

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Solution

The fourth proportional to 2,989.79, 4,125.81 and 1,663.53 is: 2,295.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,989.79 : 4,125.81 = 1,663.53 : x
  2. Step 2: Convert to fraction form
    2,989.79/4,125.81 = 1,663.53/x
  3. Step 3: Cross multiply
    2,989.79x = 4,125.81 × 1,663.53
  4. Step 4: Simplify right side
    2,989.79x = 6,863,408.71
  5. Step 5: Solve for x
    x = 6,863,408.71/2,989.79
  6. Step 6: Final answer
    x = 2,295.62

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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.