Home / 5,390.10-8,085.14-1,692.35

Finding the Fourth Proportional to 5,390.10, 8,085.14 and 1,692.35

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Solution

The fourth proportional to 5,390.10, 8,085.14 and 1,692.35 is: 2,538.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,390.10 : 8,085.14 = 1,692.35 : x
  2. Step 2: Convert to fraction form
    5,390.10/8,085.14 = 1,692.35/x
  3. Step 3: Cross multiply
    5,390.10x = 8,085.14 × 1,692.35
  4. Step 4: Simplify right side
    5,390.10x = 13,682,837.79
  5. Step 5: Solve for x
    x = 13,682,837.79/5,390.10
  6. Step 6: Final answer
    x = 2,538.51

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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.