Home / 6,478.21-9,718.55-4,485.31

Finding the Fourth Proportional to 6,478.21, 9,718.55 and 4,485.31

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Solution

The fourth proportional to 6,478.21, 9,718.55 and 4,485.31 is: 6,728.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,478.21 : 9,718.55 = 4,485.31 : x
  2. Step 2: Convert to fraction form
    6,478.21/9,718.55 = 4,485.31/x
  3. Step 3: Cross multiply
    6,478.21x = 9,718.55 × 4,485.31
  4. Step 4: Simplify right side
    6,478.21x = 43,590,679.60
  5. Step 5: Solve for x
    x = 43,590,679.60/6,478.21
  6. Step 6: Final answer
    x = 6,728.81

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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.