Home / 8,320.72-12,485.88-4,622.64

Finding the Fourth Proportional to 8,320.72, 12,485.88 and 4,622.64

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Solution

The fourth proportional to 8,320.72, 12,485.88 and 4,622.64 is: 6,936.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,320.72 : 12,485.88 = 4,622.64 : x
  2. Step 2: Convert to fraction form
    8,320.72/12,485.88 = 4,622.64/x
  3. Step 3: Cross multiply
    8,320.72x = 12,485.88 × 4,622.64
  4. Step 4: Simplify right side
    8,320.72x = 57,717,728.32
  5. Step 5: Solve for x
    x = 57,717,728.32/8,320.72
  6. Step 6: Final answer
    x = 6,936.63

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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.