Home / 7,112.74-10,678.35-5,470.45

Finding the Fourth Proportional to 7,112.74, 10,678.35 and 5,470.45

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Solution

The fourth proportional to 7,112.74, 10,678.35 and 5,470.45 is: 8,212.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,112.74 : 10,678.35 = 5,470.45 : x
  2. Step 2: Convert to fraction form
    7,112.74/10,678.35 = 5,470.45/x
  3. Step 3: Cross multiply
    7,112.74x = 10,678.35 × 5,470.45
  4. Step 4: Simplify right side
    7,112.74x = 58,415,379.76
  5. Step 5: Solve for x
    x = 58,415,379.76/7,112.74
  6. Step 6: Final answer
    x = 8,212.78

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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.