Home / 1,539.86-2,311.36-1,127.77

Finding the Fourth Proportional to 1,539.86, 2,311.36 and 1,127.77

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Solution

The fourth proportional to 1,539.86, 2,311.36 and 1,127.77 is: 1,692.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,539.86 : 2,311.36 = 1,127.77 : x
  2. Step 2: Convert to fraction form
    1,539.86/2,311.36 = 1,127.77/x
  3. Step 3: Cross multiply
    1,539.86x = 2,311.36 × 1,127.77
  4. Step 4: Simplify right side
    1,539.86x = 2,606,682.47
  5. Step 5: Solve for x
    x = 2,606,682.47/1,539.86
  6. Step 6: Final answer
    x = 1,692.80

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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.