Home / 4,071.87-5,621.71-3,125.86

Finding the Fourth Proportional to 4,071.87, 5,621.71 and 3,125.86

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Solution

The fourth proportional to 4,071.87, 5,621.71 and 3,125.86 is: 4,315.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,071.87 : 5,621.71 = 3,125.86 : x
  2. Step 2: Convert to fraction form
    4,071.87/5,621.71 = 3,125.86/x
  3. Step 3: Cross multiply
    4,071.87x = 5,621.71 × 3,125.86
  4. Step 4: Simplify right side
    4,071.87x = 17,572,656.55
  5. Step 5: Solve for x
    x = 17,572,656.55/4,071.87
  6. Step 6: Final answer
    x = 4,315.62

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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.