Home / 4,280.80-6,421.20-4,110.70

Finding the Fourth Proportional to 4,280.80, 6,421.20 and 4,110.70

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Solution

The fourth proportional to 4,280.80, 6,421.20 and 4,110.70 is: 6,166.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,280.80 : 6,421.20 = 4,110.70 : x
  2. Step 2: Convert to fraction form
    4,280.80/6,421.20 = 4,110.70/x
  3. Step 3: Cross multiply
    4,280.80x = 6,421.20 × 4,110.70
  4. Step 4: Simplify right side
    4,280.80x = 26,395,626.84
  5. Step 5: Solve for x
    x = 26,395,626.84/4,280.80
  6. Step 6: Final answer
    x = 6,166.05

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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.