Home / 6,870.15-10,305.98-2,189.07

Finding the Fourth Proportional to 6,870.15, 10,305.98 and 2,189.07

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Solution

The fourth proportional to 6,870.15, 10,305.98 and 2,189.07 is: 3,283.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,870.15 : 10,305.98 = 2,189.07 : x
  2. Step 2: Convert to fraction form
    6,870.15/10,305.98 = 2,189.07/x
  3. Step 3: Cross multiply
    6,870.15x = 10,305.98 × 2,189.07
  4. Step 4: Simplify right side
    6,870.15x = 22,560,511.64
  5. Step 5: Solve for x
    x = 22,560,511.64/6,870.15
  6. Step 6: Final answer
    x = 3,283.85

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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.