Home / 4,915.15-6,785.21-3,147.77

Finding the Fourth Proportional to 4,915.15, 6,785.21 and 3,147.77

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Solution

The fourth proportional to 4,915.15, 6,785.21 and 3,147.77 is: 4,345.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,915.15 : 6,785.21 = 3,147.77 : x
  2. Step 2: Convert to fraction form
    4,915.15/6,785.21 = 3,147.77/x
  3. Step 3: Cross multiply
    4,915.15x = 6,785.21 × 3,147.77
  4. Step 4: Simplify right side
    4,915.15x = 21,358,258.29
  5. Step 5: Solve for x
    x = 21,358,258.29/4,915.15
  6. Step 6: Final answer
    x = 4,345.39

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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.