Home / 2,101.18-2,899.08-1,216.66

Finding the Fourth Proportional to 2,101.18, 2,899.08 and 1,216.66

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Solution

The fourth proportional to 2,101.18, 2,899.08 and 1,216.66 is: 1,678.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,101.18 : 2,899.08 = 1,216.66 : x
  2. Step 2: Convert to fraction form
    2,101.18/2,899.08 = 1,216.66/x
  3. Step 3: Cross multiply
    2,101.18x = 2,899.08 × 1,216.66
  4. Step 4: Simplify right side
    2,101.18x = 3,527,194.67
  5. Step 5: Solve for x
    x = 3,527,194.67/2,101.18
  6. Step 6: Final answer
    x = 1,678.67

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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.