Home / 7,111.26-9,809.59-4,989.97

Finding the Fourth Proportional to 7,111.26, 9,809.59 and 4,989.97

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Solution

The fourth proportional to 7,111.26, 9,809.59 and 4,989.97 is: 6,883.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,111.26 : 9,809.59 = 4,989.97 : x
  2. Step 2: Convert to fraction form
    7,111.26/9,809.59 = 4,989.97/x
  3. Step 3: Cross multiply
    7,111.26x = 9,809.59 × 4,989.97
  4. Step 4: Simplify right side
    7,111.26x = 48,949,485.81
  5. Step 5: Solve for x
    x = 48,949,485.81/7,111.26
  6. Step 6: Final answer
    x = 6,883.38

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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.