Home / 2,919.51-4,380.75-1,688.04

Finding the Fourth Proportional to 2,919.51, 4,380.75 and 1,688.04

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Solution

The fourth proportional to 2,919.51, 4,380.75 and 1,688.04 is: 2,532.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,919.51 : 4,380.75 = 1,688.04 : x
  2. Step 2: Convert to fraction form
    2,919.51/4,380.75 = 1,688.04/x
  3. Step 3: Cross multiply
    2,919.51x = 4,380.75 × 1,688.04
  4. Step 4: Simplify right side
    2,919.51x = 7,394,881.23
  5. Step 5: Solve for x
    x = 7,394,881.23/2,919.51
  6. Step 6: Final answer
    x = 2,532.92

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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.