Home / 5,271.21-7,274.00-2,912.90

Finding the Fourth Proportional to 5,271.21, 7,274.00 and 2,912.90

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Solution

The fourth proportional to 5,271.21, 7,274.00 and 2,912.90 is: 4,019.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,271.21 : 7,274.00 = 2,912.90 : x
  2. Step 2: Convert to fraction form
    5,271.21/7,274.00 = 2,912.90/x
  3. Step 3: Cross multiply
    5,271.21x = 7,274.00 × 2,912.90
  4. Step 4: Simplify right side
    5,271.21x = 21,188,405.51
  5. Step 5: Solve for x
    x = 21,188,405.51/5,271.21
  6. Step 6: Final answer
    x = 4,019.65

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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.