Home / 5,162.40-7,731.36-3,928.32

Finding the Fourth Proportional to 5,162.40, 7,731.36 and 3,928.32

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Solution

The fourth proportional to 5,162.40, 7,731.36 and 3,928.32 is: 5,883.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,162.40 : 7,731.36 = 3,928.32 : x
  2. Step 2: Convert to fraction form
    5,162.40/7,731.36 = 3,928.32/x
  3. Step 3: Cross multiply
    5,162.40x = 7,731.36 × 3,928.32
  4. Step 4: Simplify right side
    5,162.40x = 30,371,256.12
  5. Step 5: Solve for x
    x = 30,371,256.12/5,162.40
  6. Step 6: Final answer
    x = 5,883.17

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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.