Home / 6,900.90-10,339.20-5,661.60

Finding the Fourth Proportional to 6,900.90, 10,339.20 and 5,661.60

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Solution

The fourth proportional to 6,900.90, 10,339.20 and 5,661.60 is: 8,482.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,900.90 : 10,339.20 = 5,661.60 : x
  2. Step 2: Convert to fraction form
    6,900.90/10,339.20 = 5,661.60/x
  3. Step 3: Cross multiply
    6,900.90x = 10,339.20 × 5,661.60
  4. Step 4: Simplify right side
    6,900.90x = 58,536,414.72
  5. Step 5: Solve for x
    x = 58,536,414.72/6,900.90
  6. Step 6: Final answer
    x = 8,482.43

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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.