Home / 6,985.40-10,470.06-3,081.80

Finding the Fourth Proportional to 6,985.40, 10,470.06 and 3,081.80

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Solution

The fourth proportional to 6,985.40, 10,470.06 and 3,081.80 is: 4,619.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,985.40 : 10,470.06 = 3,081.80 : x
  2. Step 2: Convert to fraction form
    6,985.40/10,470.06 = 3,081.80/x
  3. Step 3: Cross multiply
    6,985.40x = 10,470.06 × 3,081.80
  4. Step 4: Simplify right side
    6,985.40x = 32,266,630.91
  5. Step 5: Solve for x
    x = 32,266,630.91/6,985.40
  6. Step 6: Final answer
    x = 4,619.15

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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.