Home / 2,821.30-4,234.65-1,436.20

Finding the Fourth Proportional to 2,821.30, 4,234.65 and 1,436.20

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Solution

The fourth proportional to 2,821.30, 4,234.65 and 1,436.20 is: 2,155.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,821.30 : 4,234.65 = 1,436.20 : x
  2. Step 2: Convert to fraction form
    2,821.30/4,234.65 = 1,436.20/x
  3. Step 3: Cross multiply
    2,821.30x = 4,234.65 × 1,436.20
  4. Step 4: Simplify right side
    2,821.30x = 6,081,804.33
  5. Step 5: Solve for x
    x = 6,081,804.33/2,821.30
  6. Step 6: Final answer
    x = 2,155.67

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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.