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Finding the Fourth Proportional to 6,800.80, 10,200.39 and 1,870.94

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Solution

The fourth proportional to 6,800.80, 10,200.39 and 1,870.94 is: 2,806.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,800.80 : 10,200.39 = 1,870.94 : x
  2. Step 2: Convert to fraction form
    6,800.80/10,200.39 = 1,870.94/x
  3. Step 3: Cross multiply
    6,800.80x = 10,200.39 × 1,870.94
  4. Step 4: Simplify right side
    6,800.80x = 19,084,317.67
  5. Step 5: Solve for x
    x = 19,084,317.67/6,800.80
  6. Step 6: Final answer
    x = 2,806.19

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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.