Home / 5,785.21-7,983.74-3,515.77

Finding the Fourth Proportional to 5,785.21, 7,983.74 and 3,515.77

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Solution

The fourth proportional to 5,785.21, 7,983.74 and 3,515.77 is: 4,851.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,785.21 : 7,983.74 = 3,515.77 : x
  2. Step 2: Convert to fraction form
    5,785.21/7,983.74 = 3,515.77/x
  3. Step 3: Cross multiply
    5,785.21x = 7,983.74 × 3,515.77
  4. Step 4: Simplify right side
    5,785.21x = 28,068,993.58
  5. Step 5: Solve for x
    x = 28,068,993.58/5,785.21
  6. Step 6: Final answer
    x = 4,851.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.