Home / 1,423.49-2,135.22-557.19

Finding the Fourth Proportional to 1,423.49, 2,135.22 and 557.19

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Solution

The fourth proportional to 1,423.49, 2,135.22 and 557.19 is: 835.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,423.49 : 2,135.22 = 557.19 : x
  2. Step 2: Convert to fraction form
    1,423.49/2,135.22 = 557.19/x
  3. Step 3: Cross multiply
    1,423.49x = 2,135.22 × 557.19
  4. Step 4: Simplify right side
    1,423.49x = 1,189,723.23
  5. Step 5: Solve for x
    x = 1,189,723.23/1,423.49
  6. Step 6: Final answer
    x = 835.78

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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.