Home / 9,078.40-13,612.80-3,235.20

Finding the Fourth Proportional to 9,078.40, 13,612.80 and 3,235.20

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Solution

The fourth proportional to 9,078.40, 13,612.80 and 3,235.20 is: 4,851.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,078.40 : 13,612.80 = 3,235.20 : x
  2. Step 2: Convert to fraction form
    9,078.40/13,612.80 = 3,235.20/x
  3. Step 3: Cross multiply
    9,078.40x = 13,612.80 × 3,235.20
  4. Step 4: Simplify right side
    9,078.40x = 44,040,130.56
  5. Step 5: Solve for x
    x = 44,040,130.56/9,078.40
  6. Step 6: Final answer
    x = 4,851.09

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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.