Home / 1,930.43-2,666.52-1,558.80

Finding the Fourth Proportional to 1,930.43, 2,666.52 and 1,558.80

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Solution

The fourth proportional to 1,930.43, 2,666.52 and 1,558.80 is: 2,153.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,930.43 : 2,666.52 = 1,558.80 : x
  2. Step 2: Convert to fraction form
    1,930.43/2,666.52 = 1,558.80/x
  3. Step 3: Cross multiply
    1,930.43x = 2,666.52 × 1,558.80
  4. Step 4: Simplify right side
    1,930.43x = 4,156,571.38
  5. Step 5: Solve for x
    x = 4,156,571.38/1,930.43
  6. Step 6: Final answer
    x = 2,153.18

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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.