Home / 5,389.76-8,084.64-1,692.32

Finding the Fourth Proportional to 5,389.76, 8,084.64 and 1,692.32

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Solution

The fourth proportional to 5,389.76, 8,084.64 and 1,692.32 is: 2,538.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,389.76 : 8,084.64 = 1,692.32 : x
  2. Step 2: Convert to fraction form
    5,389.76/8,084.64 = 1,692.32/x
  3. Step 3: Cross multiply
    5,389.76x = 8,084.64 × 1,692.32
  4. Step 4: Simplify right side
    5,389.76x = 13,681,757.54
  5. Step 5: Solve for x
    x = 13,681,757.54/5,389.76
  6. Step 6: Final answer
    x = 2,538.47

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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.