Home / 3,405.63-4,698.95-2,078.85

Finding the Fourth Proportional to 3,405.63, 4,698.95 and 2,078.85

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Solution

The fourth proportional to 3,405.63, 4,698.95 and 2,078.85 is: 2,868.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,405.63 : 4,698.95 = 2,078.85 : x
  2. Step 2: Convert to fraction form
    3,405.63/4,698.95 = 2,078.85/x
  3. Step 3: Cross multiply
    3,405.63x = 4,698.95 × 2,078.85
  4. Step 4: Simplify right side
    3,405.63x = 9,768,401.81
  5. Step 5: Solve for x
    x = 9,768,401.81/3,405.63
  6. Step 6: Final answer
    x = 2,868.31

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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.