Home / 2,101.14-2,899.53-1,216.91

Finding the Fourth Proportional to 2,101.14, 2,899.53 and 1,216.91

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Solution

The fourth proportional to 2,101.14, 2,899.53 and 1,216.91 is: 1,679.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,101.14 : 2,899.53 = 1,216.91 : x
  2. Step 2: Convert to fraction form
    2,101.14/2,899.53 = 1,216.91/x
  3. Step 3: Cross multiply
    2,101.14x = 2,899.53 × 1,216.91
  4. Step 4: Simplify right side
    2,101.14x = 3,528,474.30
  5. Step 5: Solve for x
    x = 3,528,474.30/2,101.14
  6. Step 6: Final answer
    x = 1,679.31

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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.