Home / 5,390.49-8,085.99-1,692.75

Finding the Fourth Proportional to 5,390.49, 8,085.99 and 1,692.75

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Solution

The fourth proportional to 5,390.49, 8,085.99 and 1,692.75 is: 2,539.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,390.49 : 8,085.99 = 1,692.75 : x
  2. Step 2: Convert to fraction form
    5,390.49/8,085.99 = 1,692.75/x
  3. Step 3: Cross multiply
    5,390.49x = 8,085.99 × 1,692.75
  4. Step 4: Simplify right side
    5,390.49x = 13,687,559.57
  5. Step 5: Solve for x
    x = 13,687,559.57/5,390.49
  6. Step 6: Final answer
    x = 2,539.21

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1.5x scale

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.