Home / 3,125.39-4,312.64-1,930.64

Finding the Fourth Proportional to 3,125.39, 4,312.64 and 1,930.64

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Solution

The fourth proportional to 3,125.39, 4,312.64 and 1,930.64 is: 2,664.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,125.39 : 4,312.64 = 1,930.64 : x
  2. Step 2: Convert to fraction form
    3,125.39/4,312.64 = 1,930.64/x
  3. Step 3: Cross multiply
    3,125.39x = 4,312.64 × 1,930.64
  4. Step 4: Simplify right side
    3,125.39x = 8,326,138.55
  5. Step 5: Solve for x
    x = 8,326,138.55/3,125.39
  6. Step 6: Final answer
    x = 2,664.04

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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.