Home / 2,972.65-4,455.73-1,239.25

Finding the Fourth Proportional to 2,972.65, 4,455.73 and 1,239.25

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Solution

The fourth proportional to 2,972.65, 4,455.73 and 1,239.25 is: 1,857.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,972.65 : 4,455.73 = 1,239.25 : x
  2. Step 2: Convert to fraction form
    2,972.65/4,455.73 = 1,239.25/x
  3. Step 3: Cross multiply
    2,972.65x = 4,455.73 × 1,239.25
  4. Step 4: Simplify right side
    2,972.65x = 5,521,763.40
  5. Step 5: Solve for x
    x = 5,521,763.40/2,972.65
  6. Step 6: Final answer
    x = 1,857.52

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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.