Home / 1,555.34-2,144.47-1,083.65

Finding the Fourth Proportional to 1,555.34, 2,144.47 and 1,083.65

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Solution

The fourth proportional to 1,555.34, 2,144.47 and 1,083.65 is: 1,494.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,555.34 : 2,144.47 = 1,083.65 : x
  2. Step 2: Convert to fraction form
    1,555.34/2,144.47 = 1,083.65/x
  3. Step 3: Cross multiply
    1,555.34x = 2,144.47 × 1,083.65
  4. Step 4: Simplify right side
    1,555.34x = 2,323,841.48
  5. Step 5: Solve for x
    x = 2,323,841.48/1,555.34
  6. Step 6: Final answer
    x = 1,494.11

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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.