Home / 6,916.80-9,541.44-4,120.32

Finding the Fourth Proportional to 6,916.80, 9,541.44 and 4,120.32

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Solution

The fourth proportional to 6,916.80, 9,541.44 and 4,120.32 is: 5,683.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,916.80 : 9,541.44 = 4,120.32 : x
  2. Step 2: Convert to fraction form
    6,916.80/9,541.44 = 4,120.32/x
  3. Step 3: Cross multiply
    6,916.80x = 9,541.44 × 4,120.32
  4. Step 4: Simplify right side
    6,916.80x = 39,313,786.06
  5. Step 5: Solve for x
    x = 39,313,786.06/6,916.80
  6. Step 6: Final answer
    x = 5,683.81

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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.