Home / 5,125.57-7,071.97-3,135.40

Finding the Fourth Proportional to 5,125.57, 7,071.97 and 3,135.40

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Solution

The fourth proportional to 5,125.57, 7,071.97 and 3,135.40 is: 4,326.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,125.57 : 7,071.97 = 3,135.40 : x
  2. Step 2: Convert to fraction form
    5,125.57/7,071.97 = 3,135.40/x
  3. Step 3: Cross multiply
    5,125.57x = 7,071.97 × 3,135.40
  4. Step 4: Simplify right side
    5,125.57x = 22,173,454.74
  5. Step 5: Solve for x
    x = 22,173,454.74/5,125.57
  6. Step 6: Final answer
    x = 4,326.05

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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.