Home / 3,133.75-4,323.50-1,788.40

Finding the Fourth Proportional to 3,133.75, 4,323.50 and 1,788.40

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Solution

The fourth proportional to 3,133.75, 4,323.50 and 1,788.40 is: 2,467.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,133.75 : 4,323.50 = 1,788.40 : x
  2. Step 2: Convert to fraction form
    3,133.75/4,323.50 = 1,788.40/x
  3. Step 3: Cross multiply
    3,133.75x = 4,323.50 × 1,788.40
  4. Step 4: Simplify right side
    3,133.75x = 7,732,147.40
  5. Step 5: Solve for x
    x = 7,732,147.40/3,133.75
  6. Step 6: Final answer
    x = 2,467.38

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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.