Home / 8,151.20-12,210.60-4,684.40

Finding the Fourth Proportional to 8,151.20, 12,210.60 and 4,684.40

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Solution

The fourth proportional to 8,151.20, 12,210.60 and 4,684.40 is: 7,017.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,151.20 : 12,210.60 = 4,684.40 : x
  2. Step 2: Convert to fraction form
    8,151.20/12,210.60 = 4,684.40/x
  3. Step 3: Cross multiply
    8,151.20x = 12,210.60 × 4,684.40
  4. Step 4: Simplify right side
    8,151.20x = 57,199,334.64
  5. Step 5: Solve for x
    x = 57,199,334.64/8,151.20
  6. Step 6: Final answer
    x = 7,017.29

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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.