Home / 2,211.08-3,051.26-1,216.30

Finding the Fourth Proportional to 2,211.08, 3,051.26 and 1,216.30

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Solution

The fourth proportional to 2,211.08, 3,051.26 and 1,216.30 is: 1,678.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,211.08 : 3,051.26 = 1,216.30 : x
  2. Step 2: Convert to fraction form
    2,211.08/3,051.26 = 1,216.30/x
  3. Step 3: Cross multiply
    2,211.08x = 3,051.26 × 1,216.30
  4. Step 4: Simplify right side
    2,211.08x = 3,711,244.11
  5. Step 5: Solve for x
    x = 3,711,244.11/2,211.08
  6. Step 6: Final answer
    x = 1,678.48

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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.