Home / 1,387.84-2,083.59-1,273.23

Finding the Fourth Proportional to 1,387.84, 2,083.59 and 1,273.23

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Solution

The fourth proportional to 1,387.84, 2,083.59 and 1,273.23 is: 1,911.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387.84 : 2,083.59 = 1,273.23 : x
  2. Step 2: Convert to fraction form
    1,387.84/2,083.59 = 1,273.23/x
  3. Step 3: Cross multiply
    1,387.84x = 2,083.59 × 1,273.23
  4. Step 4: Simplify right side
    1,387.84x = 2,652,878.88
  5. Step 5: Solve for x
    x = 2,652,878.88/1,387.84
  6. Step 6: Final answer
    x = 1,911.52

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1.5x scale

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.