Home / 3,809.10-5,713.65-1,212.30

Finding the Fourth Proportional to 3,809.10, 5,713.65 and 1,212.30

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Solution

The fourth proportional to 3,809.10, 5,713.65 and 1,212.30 is: 1,818.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,809.10 : 5,713.65 = 1,212.30 : x
  2. Step 2: Convert to fraction form
    3,809.10/5,713.65 = 1,212.30/x
  3. Step 3: Cross multiply
    3,809.10x = 5,713.65 × 1,212.30
  4. Step 4: Simplify right side
    3,809.10x = 6,926,657.90
  5. Step 5: Solve for x
    x = 6,926,657.90/3,809.10
  6. Step 6: Final answer
    x = 1,818.45

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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.