Home / 2,116.02-2,919.87-1,231.74

Finding the Fourth Proportional to 2,116.02, 2,919.87 and 1,231.74

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Solution

The fourth proportional to 2,116.02, 2,919.87 and 1,231.74 is: 1,699.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,116.02 : 2,919.87 = 1,231.74 : x
  2. Step 2: Convert to fraction form
    2,116.02/2,919.87 = 1,231.74/x
  3. Step 3: Cross multiply
    2,116.02x = 2,919.87 × 1,231.74
  4. Step 4: Simplify right side
    2,116.02x = 3,596,520.67
  5. Step 5: Solve for x
    x = 3,596,520.67/2,116.02
  6. Step 6: Final answer
    x = 1,699.66

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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.