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Finding the Fourth Proportional to 5,163.80, 7,126.00 and 2,926.10

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Solution

The fourth proportional to 5,163.80, 7,126.00 and 2,926.10 is: 4,038.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,163.80 : 7,126.00 = 2,926.10 : x
  2. Step 2: Convert to fraction form
    5,163.80/7,126.00 = 2,926.10/x
  3. Step 3: Cross multiply
    5,163.80x = 7,126.00 × 2,926.10
  4. Step 4: Simplify right side
    5,163.80x = 20,851,399.10
  5. Step 5: Solve for x
    x = 20,851,399.10/5,163.80
  6. Step 6: Final answer
    x = 4,038.00

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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.