Home / 5,431.50-8,147.28-1,734.12

Finding the Fourth Proportional to 5,431.50, 8,147.28 and 1,734.12

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Solution

The fourth proportional to 5,431.50, 8,147.28 and 1,734.12 is: 2,601.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,431.50 : 8,147.28 = 1,734.12 : x
  2. Step 2: Convert to fraction form
    5,431.50/8,147.28 = 1,734.12/x
  3. Step 3: Cross multiply
    5,431.50x = 8,147.28 × 1,734.12
  4. Step 4: Simplify right side
    5,431.50x = 14,128,361.19
  5. Step 5: Solve for x
    x = 14,128,361.19/5,431.50
  6. Step 6: Final answer
    x = 2,601.19

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Half scale
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Double scale
Find fourth proportional to 5,432.50, 8,148.78 and 1,735.12
Similar ratio
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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.