Home / 1,289.17-1,930.07-1,207.43

Finding the Fourth Proportional to 1,289.17, 1,930.07 and 1,207.43

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Solution

The fourth proportional to 1,289.17, 1,930.07 and 1,207.43 is: 1,807.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289.17 : 1,930.07 = 1,207.43 : x
  2. Step 2: Convert to fraction form
    1,289.17/1,930.07 = 1,207.43/x
  3. Step 3: Cross multiply
    1,289.17x = 1,930.07 × 1,207.43
  4. Step 4: Simplify right side
    1,289.17x = 2,330,424.42
  5. Step 5: Solve for x
    x = 2,330,424.42/1,289.17
  6. Step 6: Final answer
    x = 1,807.69

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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.