Home / 8,259.85-12,395.85-5,485.60

Finding the Fourth Proportional to 8,259.85, 12,395.85 and 5,485.60

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Solution

The fourth proportional to 8,259.85, 12,395.85 and 5,485.60 is: 8,232.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,259.85 : 12,395.85 = 5,485.60 : x
  2. Step 2: Convert to fraction form
    8,259.85/12,395.85 = 5,485.60/x
  3. Step 3: Cross multiply
    8,259.85x = 12,395.85 × 5,485.60
  4. Step 4: Simplify right side
    8,259.85x = 67,998,643.77
  5. Step 5: Solve for x
    x = 67,998,643.77/8,259.85
  6. Step 6: Final answer
    x = 8,232.43

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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.