Home / 3,759.18-5,638.80-1,678.68

Finding the Fourth Proportional to 3,759.18, 5,638.80 and 1,678.68

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Solution

The fourth proportional to 3,759.18, 5,638.80 and 1,678.68 is: 2,518.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,759.18 : 5,638.80 = 1,678.68 : x
  2. Step 2: Convert to fraction form
    3,759.18/5,638.80 = 1,678.68/x
  3. Step 3: Cross multiply
    3,759.18x = 5,638.80 × 1,678.68
  4. Step 4: Simplify right side
    3,759.18x = 9,465,740.78
  5. Step 5: Solve for x
    x = 9,465,740.78/3,759.18
  6. Step 6: Final answer
    x = 2,518.03

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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.