Home / 1,539.96-2,124.33-1,042.77

Finding the Fourth Proportional to 1,539.96, 2,124.33 and 1,042.77

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Solution

The fourth proportional to 1,539.96, 2,124.33 and 1,042.77 is: 1,438.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,539.96 : 2,124.33 = 1,042.77 : x
  2. Step 2: Convert to fraction form
    1,539.96/2,124.33 = 1,042.77/x
  3. Step 3: Cross multiply
    1,539.96x = 2,124.33 × 1,042.77
  4. Step 4: Simplify right side
    1,539.96x = 2,215,187.59
  5. Step 5: Solve for x
    x = 2,215,187.59/1,539.96
  6. Step 6: Final answer
    x = 1,438.47

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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.