Home / 2,871.24-4,307.26-1,021.80

Finding the Fourth Proportional to 2,871.24, 4,307.26 and 1,021.80

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Solution

The fourth proportional to 2,871.24, 4,307.26 and 1,021.80 is: 1,532.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,871.24 : 4,307.26 = 1,021.80 : x
  2. Step 2: Convert to fraction form
    2,871.24/4,307.26 = 1,021.80/x
  3. Step 3: Cross multiply
    2,871.24x = 4,307.26 × 1,021.80
  4. Step 4: Simplify right side
    2,871.24x = 4,401,158.27
  5. Step 5: Solve for x
    x = 4,401,158.27/2,871.24
  6. Step 6: Final answer
    x = 1,532.84

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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.