Home / 7,918.40-10,923.96-4,772.78

Finding the Fourth Proportional to 7,918.40, 10,923.96 and 4,772.78

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Solution

The fourth proportional to 7,918.40, 10,923.96 and 4,772.78 is: 6,584.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,918.40 : 10,923.96 = 4,772.78 : x
  2. Step 2: Convert to fraction form
    7,918.40/10,923.96 = 4,772.78/x
  3. Step 3: Cross multiply
    7,918.40x = 10,923.96 × 4,772.78
  4. Step 4: Simplify right side
    7,918.40x = 52,137,657.81
  5. Step 5: Solve for x
    x = 52,137,657.81/7,918.40
  6. Step 6: Final answer
    x = 6,584.37

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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.