Home / 1,539.97-2,320.35-1,272.07

Finding the Fourth Proportional to 1,539.97, 2,320.35 and 1,272.07

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Solution

The fourth proportional to 1,539.97, 2,320.35 and 1,272.07 is: 1,916.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,539.97 : 2,320.35 = 1,272.07 : x
  2. Step 2: Convert to fraction form
    1,539.97/2,320.35 = 1,272.07/x
  3. Step 3: Cross multiply
    1,539.97x = 2,320.35 × 1,272.07
  4. Step 4: Simplify right side
    1,539.97x = 2,951,647.62
  5. Step 5: Solve for x
    x = 2,951,647.62/1,539.97
  6. Step 6: Final answer
    x = 1,916.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.