Home / 2,989.30-4,485.27-1,042.90

Finding the Fourth Proportional to 2,989.30, 4,485.27 and 1,042.90

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Solution

The fourth proportional to 2,989.30, 4,485.27 and 1,042.90 is: 1,564.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,989.30 : 4,485.27 = 1,042.90 : x
  2. Step 2: Convert to fraction form
    2,989.30/4,485.27 = 1,042.90/x
  3. Step 3: Cross multiply
    2,989.30x = 4,485.27 × 1,042.90
  4. Step 4: Simplify right side
    2,989.30x = 4,677,688.08
  5. Step 5: Solve for x
    x = 4,677,688.08/2,989.30
  6. Step 6: Final answer
    x = 1,564.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.