Home / 4,078.80-5,630.08-2,400.12

Finding the Fourth Proportional to 4,078.80, 5,630.08 and 2,400.12

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Solution

The fourth proportional to 4,078.80, 5,630.08 and 2,400.12 is: 3,312.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,078.80 : 5,630.08 = 2,400.12 : x
  2. Step 2: Convert to fraction form
    4,078.80/5,630.08 = 2,400.12/x
  3. Step 3: Cross multiply
    4,078.80x = 5,630.08 × 2,400.12
  4. Step 4: Simplify right side
    4,078.80x = 13,512,867.61
  5. Step 5: Solve for x
    x = 13,512,867.61/4,078.80
  6. Step 6: Final answer
    x = 3,312.95

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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.