Home / 7,975.80-11,007.45-4,619.70

Finding the Fourth Proportional to 7,975.80, 11,007.45 and 4,619.70

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Solution

The fourth proportional to 7,975.80, 11,007.45 and 4,619.70 is: 6,375.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,975.80 : 11,007.45 = 4,619.70 : x
  2. Step 2: Convert to fraction form
    7,975.80/11,007.45 = 4,619.70/x
  3. Step 3: Cross multiply
    7,975.80x = 11,007.45 × 4,619.70
  4. Step 4: Simplify right side
    7,975.80x = 50,851,116.77
  5. Step 5: Solve for x
    x = 50,851,116.77/7,975.80
  6. Step 6: Final answer
    x = 6,375.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.