Home / 4,480.80-6,720.30-2,140.80

Finding the Fourth Proportional to 4,480.80, 6,720.30 and 2,140.80

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Solution

The fourth proportional to 4,480.80, 6,720.30 and 2,140.80 is: 3,210.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,480.80 : 6,720.30 = 2,140.80 : x
  2. Step 2: Convert to fraction form
    4,480.80/6,720.30 = 2,140.80/x
  3. Step 3: Cross multiply
    4,480.80x = 6,720.30 × 2,140.80
  4. Step 4: Simplify right side
    4,480.80x = 14,386,818.24
  5. Step 5: Solve for x
    x = 14,386,818.24/4,480.80
  6. Step 6: Final answer
    x = 3,210.77

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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.