Home / 1,262.93-1,743.69-1,129.74

Finding the Fourth Proportional to 1,262.93, 1,743.69 and 1,129.74

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Solution

The fourth proportional to 1,262.93, 1,743.69 and 1,129.74 is: 1,559.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,262.93 : 1,743.69 = 1,129.74 : x
  2. Step 2: Convert to fraction form
    1,262.93/1,743.69 = 1,129.74/x
  3. Step 3: Cross multiply
    1,262.93x = 1,743.69 × 1,129.74
  4. Step 4: Simplify right side
    1,262.93x = 1,969,916.34
  5. Step 5: Solve for x
    x = 1,969,916.34/1,262.93
  6. Step 6: Final answer
    x = 1,559.80

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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.