Home / 2,989.34-4,125.64-1,810.40

Finding the Fourth Proportional to 2,989.34, 4,125.64 and 1,810.40

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Solution

The fourth proportional to 2,989.34, 4,125.64 and 1,810.40 is: 2,498.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,989.34 : 4,125.64 = 1,810.40 : x
  2. Step 2: Convert to fraction form
    2,989.34/4,125.64 = 1,810.40/x
  3. Step 3: Cross multiply
    2,989.34x = 4,125.64 × 1,810.40
  4. Step 4: Simplify right side
    2,989.34x = 7,469,058.66
  5. Step 5: Solve for x
    x = 7,469,058.66/2,989.34
  6. Step 6: Final answer
    x = 2,498.56

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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.