Home / 1,539.70-2,119.44-1,342.88

Finding the Fourth Proportional to 1,539.70, 2,119.44 and 1,342.88

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Solution

The fourth proportional to 1,539.70, 2,119.44 and 1,342.88 is: 1,848.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,539.70 : 2,119.44 = 1,342.88 : x
  2. Step 2: Convert to fraction form
    1,539.70/2,119.44 = 1,342.88/x
  3. Step 3: Cross multiply
    1,539.70x = 2,119.44 × 1,342.88
  4. Step 4: Simplify right side
    1,539.70x = 2,846,153.59
  5. Step 5: Solve for x
    x = 2,846,153.59/1,539.70
  6. Step 6: Final answer
    x = 1,848.51

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1.5x scale

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.