Home / 3,916.80-5,875.12-1,608.32

Finding the Fourth Proportional to 3,916.80, 5,875.12 and 1,608.32

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Solution

The fourth proportional to 3,916.80, 5,875.12 and 1,608.32 is: 2,412.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,916.80 : 5,875.12 = 1,608.32 : x
  2. Step 2: Convert to fraction form
    3,916.80/5,875.12 = 1,608.32/x
  3. Step 3: Cross multiply
    3,916.80x = 5,875.12 × 1,608.32
  4. Step 4: Simplify right side
    3,916.80x = 9,449,073.00
  5. Step 5: Solve for x
    x = 9,449,073.00/3,916.80
  6. Step 6: Final answer
    x = 2,412.45

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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.