Home / 5,431.64-8,147.82-1,535.72

Finding the Fourth Proportional to 5,431.64, 8,147.82 and 1,535.72

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Solution

The fourth proportional to 5,431.64, 8,147.82 and 1,535.72 is: 2,303.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,431.64 : 8,147.82 = 1,535.72 : x
  2. Step 2: Convert to fraction form
    5,431.64/8,147.82 = 1,535.72/x
  3. Step 3: Cross multiply
    5,431.64x = 8,147.82 × 1,535.72
  4. Step 4: Simplify right side
    5,431.64x = 12,512,770.13
  5. Step 5: Solve for x
    x = 12,512,770.13/5,431.64
  6. Step 6: Final answer
    x = 2,303.68

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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.