Home / 5,207.30-7,810.80-2,086.34

Finding the Fourth Proportional to 5,207.30, 7,810.80 and 2,086.34

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Solution

The fourth proportional to 5,207.30, 7,810.80 and 2,086.34 is: 3,129.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,207.30 : 7,810.80 = 2,086.34 : x
  2. Step 2: Convert to fraction form
    5,207.30/7,810.80 = 2,086.34/x
  3. Step 3: Cross multiply
    5,207.30x = 7,810.80 × 2,086.34
  4. Step 4: Simplify right side
    5,207.30x = 16,295,984.47
  5. Step 5: Solve for x
    x = 16,295,984.47/5,207.30
  6. Step 6: Final answer
    x = 3,129.45

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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.