Home / 3,928.10-5,416.54-2,973.16

Finding the Fourth Proportional to 3,928.10, 5,416.54 and 2,973.16

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Solution

The fourth proportional to 3,928.10, 5,416.54 and 2,973.16 is: 4,099.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,928.10 : 5,416.54 = 2,973.16 : x
  2. Step 2: Convert to fraction form
    3,928.10/5,416.54 = 2,973.16/x
  3. Step 3: Cross multiply
    3,928.10x = 5,416.54 × 2,973.16
  4. Step 4: Simplify right side
    3,928.10x = 16,104,240.07
  5. Step 5: Solve for x
    x = 16,104,240.07/3,928.10
  6. Step 6: Final answer
    x = 4,099.75

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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.