Home / 5,211.30-7,816.80-2,090.34

Finding the Fourth Proportional to 5,211.30, 7,816.80 and 2,090.34

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Solution

The fourth proportional to 5,211.30, 7,816.80 and 2,090.34 is: 3,135.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,211.30 : 7,816.80 = 2,090.34 : x
  2. Step 2: Convert to fraction form
    5,211.30/7,816.80 = 2,090.34/x
  3. Step 3: Cross multiply
    5,211.30x = 7,816.80 × 2,090.34
  4. Step 4: Simplify right side
    5,211.30x = 16,339,769.71
  5. Step 5: Solve for x
    x = 16,339,769.71/5,211.30
  6. Step 6: Final answer
    x = 3,135.45

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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.