Home / 7,918.47-11,870.24-2,720.70

Finding the Fourth Proportional to 7,918.47, 11,870.24 and 2,720.70

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Solution

The fourth proportional to 7,918.47, 11,870.24 and 2,720.70 is: 4,078.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,918.47 : 11,870.24 = 2,720.70 : x
  2. Step 2: Convert to fraction form
    7,918.47/11,870.24 = 2,720.70/x
  3. Step 3: Cross multiply
    7,918.47x = 11,870.24 × 2,720.70
  4. Step 4: Simplify right side
    7,918.47x = 32,295,361.97
  5. Step 5: Solve for x
    x = 32,295,361.97/7,918.47
  6. Step 6: Final answer
    x = 4,078.49

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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.