Home / 5,133.90-7,700.28-2,211.78

Finding the Fourth Proportional to 5,133.90, 7,700.28 and 2,211.78

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Solution

The fourth proportional to 5,133.90, 7,700.28 and 2,211.78 is: 3,317.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,133.90 : 7,700.28 = 2,211.78 : x
  2. Step 2: Convert to fraction form
    5,133.90/7,700.28 = 2,211.78/x
  3. Step 3: Cross multiply
    5,133.90x = 7,700.28 × 2,211.78
  4. Step 4: Simplify right side
    5,133.90x = 17,031,325.30
  5. Step 5: Solve for x
    x = 17,031,325.30/5,133.90
  6. Step 6: Final answer
    x = 3,317.42

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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.