Home / 3,971.64-5,474.55-3,130.98

Finding the Fourth Proportional to 3,971.64, 5,474.55 and 3,130.98

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Solution

The fourth proportional to 3,971.64, 5,474.55 and 3,130.98 is: 4,315.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,971.64 : 5,474.55 = 3,130.98 : x
  2. Step 2: Convert to fraction form
    3,971.64/5,474.55 = 3,130.98/x
  3. Step 3: Cross multiply
    3,971.64x = 5,474.55 × 3,130.98
  4. Step 4: Simplify right side
    3,971.64x = 17,140,706.56
  5. Step 5: Solve for x
    x = 17,140,706.56/3,971.64
  6. Step 6: Final answer
    x = 4,315.78

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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.