Home / 8,528.40-12,792.60-5,230.80

Finding the Fourth Proportional to 8,528.40, 12,792.60 and 5,230.80

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Solution

The fourth proportional to 8,528.40, 12,792.60 and 5,230.80 is: 7,846.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,528.40 : 12,792.60 = 5,230.80 : x
  2. Step 2: Convert to fraction form
    8,528.40/12,792.60 = 5,230.80/x
  3. Step 3: Cross multiply
    8,528.40x = 12,792.60 × 5,230.80
  4. Step 4: Simplify right side
    8,528.40x = 66,915,532.08
  5. Step 5: Solve for x
    x = 66,915,532.08/8,528.40
  6. Step 6: Final answer
    x = 7,846.20

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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.