Home / 8,619.12-12,870.30-6,844.22

Finding the Fourth Proportional to 8,619.12, 12,870.30 and 6,844.22

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Solution

The fourth proportional to 8,619.12, 12,870.30 and 6,844.22 is: 10,219.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,619.12 : 12,870.30 = 6,844.22 : x
  2. Step 2: Convert to fraction form
    8,619.12/12,870.30 = 6,844.22/x
  3. Step 3: Cross multiply
    8,619.12x = 12,870.30 × 6,844.22
  4. Step 4: Simplify right side
    8,619.12x = 88,087,100.31
  5. Step 5: Solve for x
    x = 88,087,100.31/8,619.12
  6. Step 6: Final answer
    x = 10,219.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.