Home / 2,015.88-2,782.18-1,317.66

Finding the Fourth Proportional to 2,015.88, 2,782.18 and 1,317.66

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Solution

The fourth proportional to 2,015.88, 2,782.18 and 1,317.66 is: 1,818.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,015.88 : 2,782.18 = 1,317.66 : x
  2. Step 2: Convert to fraction form
    2,015.88/2,782.18 = 1,317.66/x
  3. Step 3: Cross multiply
    2,015.88x = 2,782.18 × 1,317.66
  4. Step 4: Simplify right side
    2,015.88x = 3,665,967.30
  5. Step 5: Solve for x
    x = 3,665,967.30/2,015.88
  6. Step 6: Final answer
    x = 1,818.54

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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.