Home / 6,870.12-10,305.93-2,189.03

Finding the Fourth Proportional to 6,870.12, 10,305.93 and 2,189.03

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Solution

The fourth proportional to 6,870.12, 10,305.93 and 2,189.03 is: 3,283.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,870.12 : 10,305.93 = 2,189.03 : x
  2. Step 2: Convert to fraction form
    6,870.12/10,305.93 = 2,189.03/x
  3. Step 3: Cross multiply
    6,870.12x = 10,305.93 × 2,189.03
  4. Step 4: Simplify right side
    6,870.12x = 22,559,989.95
  5. Step 5: Solve for x
    x = 22,559,989.95/6,870.12
  6. Step 6: Final answer
    x = 3,283.78

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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.