Home / 3,102.30-4,653.45-1,806.30

Finding the Fourth Proportional to 3,102.30, 4,653.45 and 1,806.30

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Solution

The fourth proportional to 3,102.30, 4,653.45 and 1,806.30 is: 2,709.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,102.30 : 4,653.45 = 1,806.30 : x
  2. Step 2: Convert to fraction form
    3,102.30/4,653.45 = 1,806.30/x
  3. Step 3: Cross multiply
    3,102.30x = 4,653.45 × 1,806.30
  4. Step 4: Simplify right side
    3,102.30x = 8,405,526.74
  5. Step 5: Solve for x
    x = 8,405,526.74/3,102.30
  6. Step 6: Final answer
    x = 2,709.45

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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.