Home / 6,451.65-9,678.84-2,072.18

Finding the Fourth Proportional to 6,451.65, 9,678.84 and 2,072.18

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Solution

The fourth proportional to 6,451.65, 9,678.84 and 2,072.18 is: 3,108.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,451.65 : 9,678.84 = 2,072.18 : x
  2. Step 2: Convert to fraction form
    6,451.65/9,678.84 = 2,072.18/x
  3. Step 3: Cross multiply
    6,451.65x = 9,678.84 × 2,072.18
  4. Step 4: Simplify right side
    6,451.65x = 20,056,250.28
  5. Step 5: Solve for x
    x = 20,056,250.28/6,451.65
  6. Step 6: Final answer
    x = 3,108.70

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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.