Home / 3,078.12-4,247.58-2,416.55

Finding the Fourth Proportional to 3,078.12, 4,247.58 and 2,416.55

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Solution

The fourth proportional to 3,078.12, 4,247.58 and 2,416.55 is: 3,334.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,078.12 : 4,247.58 = 2,416.55 : x
  2. Step 2: Convert to fraction form
    3,078.12/4,247.58 = 2,416.55/x
  3. Step 3: Cross multiply
    3,078.12x = 4,247.58 × 2,416.55
  4. Step 4: Simplify right side
    3,078.12x = 10,264,478.83
  5. Step 5: Solve for x
    x = 10,264,478.83/3,078.12
  6. Step 6: Final answer
    x = 3,334.66

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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.