Home / 5,156.16-7,729.92-2,080.32

Finding the Fourth Proportional to 5,156.16, 7,729.92 and 2,080.32

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Solution

The fourth proportional to 5,156.16, 7,729.92 and 2,080.32 is: 3,118.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,156.16 : 7,729.92 = 2,080.32 : x
  2. Step 2: Convert to fraction form
    5,156.16/7,729.92 = 2,080.32/x
  3. Step 3: Cross multiply
    5,156.16x = 7,729.92 × 2,080.32
  4. Step 4: Simplify right side
    5,156.16x = 16,080,707.17
  5. Step 5: Solve for x
    x = 16,080,707.17/5,156.16
  6. Step 6: Final answer
    x = 3,118.74

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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.