Home / 1,972.84-2,721.45-1,273

Finding the Fourth Proportional to 1,972.84, 2,721.45 and 1,273

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Solution

The fourth proportional to 1,972.84, 2,721.45 and 1,273 is: 1,756.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,972.84 : 2,721.45 = 1,273 : x
  2. Step 2: Convert to fraction form
    1,972.84/2,721.45 = 1,273/x
  3. Step 3: Cross multiply
    1,972.84x = 2,721.45 × 1,273
  4. Step 4: Simplify right side
    1,972.84x = 3,464,405.85
  5. Step 5: Solve for x
    x = 3,464,405.85/1,972.84
  6. Step 6: Final answer
    x = 1,756.05

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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.