Home / 2,705.08-4,054.36-1,242.20

Finding the Fourth Proportional to 2,705.08, 4,054.36 and 1,242.20

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Solution

The fourth proportional to 2,705.08, 4,054.36 and 1,242.20 is: 1,861.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,705.08 : 4,054.36 = 1,242.20 : x
  2. Step 2: Convert to fraction form
    2,705.08/4,054.36 = 1,242.20/x
  3. Step 3: Cross multiply
    2,705.08x = 4,054.36 × 1,242.20
  4. Step 4: Simplify right side
    2,705.08x = 5,036,325.99
  5. Step 5: Solve for x
    x = 5,036,325.99/2,705.08
  6. Step 6: Final answer
    x = 1,861.80

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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.