Home / 6,980.12-10,470.08-1,785.96

Finding the Fourth Proportional to 6,980.12, 10,470.08 and 1,785.96

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Solution

The fourth proportional to 6,980.12, 10,470.08 and 1,785.96 is: 2,678.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,980.12 : 10,470.08 = 1,785.96 : x
  2. Step 2: Convert to fraction form
    6,980.12/10,470.08 = 1,785.96/x
  3. Step 3: Cross multiply
    6,980.12x = 10,470.08 × 1,785.96
  4. Step 4: Simplify right side
    6,980.12x = 18,699,144.08
  5. Step 5: Solve for x
    x = 18,699,144.08/6,980.12
  6. Step 6: Final answer
    x = 2,678.91

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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.