Home / 1,272.47-1,911.38-1,230.93

Finding the Fourth Proportional to 1,272.47, 1,911.38 and 1,230.93

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Solution

The fourth proportional to 1,272.47, 1,911.38 and 1,230.93 is: 1,848.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272.47 : 1,911.38 = 1,230.93 : x
  2. Step 2: Convert to fraction form
    1,272.47/1,911.38 = 1,230.93/x
  3. Step 3: Cross multiply
    1,272.47x = 1,911.38 × 1,230.93
  4. Step 4: Simplify right side
    1,272.47x = 2,352,768.83
  5. Step 5: Solve for x
    x = 2,352,768.83/1,272.47
  6. Step 6: Final answer
    x = 1,848.99

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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.