Home / 5,390.56-8,085.94-1,692.70

Finding the Fourth Proportional to 5,390.56, 8,085.94 and 1,692.70

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Solution

The fourth proportional to 5,390.56, 8,085.94 and 1,692.70 is: 2,539.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,390.56 : 8,085.94 = 1,692.70 : x
  2. Step 2: Convert to fraction form
    5,390.56/8,085.94 = 1,692.70/x
  3. Step 3: Cross multiply
    5,390.56x = 8,085.94 × 1,692.70
  4. Step 4: Simplify right side
    5,390.56x = 13,687,070.64
  5. Step 5: Solve for x
    x = 13,687,070.64/5,390.56
  6. Step 6: Final answer
    x = 2,539.08

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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.