Home / 2,615.84-3,925.37-1,920.79

Finding the Fourth Proportional to 2,615.84, 3,925.37 and 1,920.79

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Solution

The fourth proportional to 2,615.84, 3,925.37 and 1,920.79 is: 2,882.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,615.84 : 3,925.37 = 1,920.79 : x
  2. Step 2: Convert to fraction form
    2,615.84/3,925.37 = 1,920.79/x
  3. Step 3: Cross multiply
    2,615.84x = 3,925.37 × 1,920.79
  4. Step 4: Simplify right side
    2,615.84x = 7,539,806.43
  5. Step 5: Solve for x
    x = 7,539,806.43/2,615.84
  6. Step 6: Final answer
    x = 2,882.37

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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.