Home / 6,280.10-9,420.60-2,120.24

Finding the Fourth Proportional to 6,280.10, 9,420.60 and 2,120.24

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Solution

The fourth proportional to 6,280.10, 9,420.60 and 2,120.24 is: 3,180.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,280.10 : 9,420.60 = 2,120.24 : x
  2. Step 2: Convert to fraction form
    6,280.10/9,420.60 = 2,120.24/x
  3. Step 3: Cross multiply
    6,280.10x = 9,420.60 × 2,120.24
  4. Step 4: Simplify right side
    6,280.10x = 19,973,964.45
  5. Step 5: Solve for x
    x = 19,973,964.45/6,280.10
  6. Step 6: Final answer
    x = 3,180.52

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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.