Home / 5,126.21-7,689.53-2,659.45

Finding the Fourth Proportional to 5,126.21, 7,689.53 and 2,659.45

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Solution

The fourth proportional to 5,126.21, 7,689.53 and 2,659.45 is: 3,989.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,126.21 : 7,689.53 = 2,659.45 : x
  2. Step 2: Convert to fraction form
    5,126.21/7,689.53 = 2,659.45/x
  3. Step 3: Cross multiply
    5,126.21x = 7,689.53 × 2,659.45
  4. Step 4: Simplify right side
    5,126.21x = 20,449,868.81
  5. Step 5: Solve for x
    x = 20,449,868.81/5,126.21
  6. Step 6: Final answer
    x = 3,989.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.