Home / 2,798.21-3,861.55-1,539.22

Finding the Fourth Proportional to 2,798.21, 3,861.55 and 1,539.22

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Solution

The fourth proportional to 2,798.21, 3,861.55 and 1,539.22 is: 2,124.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,798.21 : 3,861.55 = 1,539.22 : x
  2. Step 2: Convert to fraction form
    2,798.21/3,861.55 = 1,539.22/x
  3. Step 3: Cross multiply
    2,798.21x = 3,861.55 × 1,539.22
  4. Step 4: Simplify right side
    2,798.21x = 5,943,774.99
  5. Step 5: Solve for x
    x = 5,943,774.99/2,798.21
  6. Step 6: Final answer
    x = 2,124.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.