Home / 8,077.80-12,116.70-6,328.20

Finding the Fourth Proportional to 8,077.80, 12,116.70 and 6,328.20

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Solution

The fourth proportional to 8,077.80, 12,116.70 and 6,328.20 is: 9,492.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,077.80 : 12,116.70 = 6,328.20 : x
  2. Step 2: Convert to fraction form
    8,077.80/12,116.70 = 6,328.20/x
  3. Step 3: Cross multiply
    8,077.80x = 12,116.70 × 6,328.20
  4. Step 4: Simplify right side
    8,077.80x = 76,676,900.94
  5. Step 5: Solve for x
    x = 76,676,900.94/8,077.80
  6. Step 6: Final answer
    x = 9,492.30

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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.