Home / 6,871.20-9,484.32-4,078.32

Finding the Fourth Proportional to 6,871.20, 9,484.32 and 4,078.32

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Solution

The fourth proportional to 6,871.20, 9,484.32 and 4,078.32 is: 5,629.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,871.20 : 9,484.32 = 4,078.32 : x
  2. Step 2: Convert to fraction form
    6,871.20/9,484.32 = 4,078.32/x
  3. Step 3: Cross multiply
    6,871.20x = 9,484.32 × 4,078.32
  4. Step 4: Simplify right side
    6,871.20x = 38,680,091.94
  5. Step 5: Solve for x
    x = 38,680,091.94/6,871.20
  6. Step 6: Final answer
    x = 5,629.31

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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.