Home / 1,682.16-2,321.22-1,240.30

Finding the Fourth Proportional to 1,682.16, 2,321.22 and 1,240.30

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Solution

The fourth proportional to 1,682.16, 2,321.22 and 1,240.30 is: 1,711.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,682.16 : 2,321.22 = 1,240.30 : x
  2. Step 2: Convert to fraction form
    1,682.16/2,321.22 = 1,240.30/x
  3. Step 3: Cross multiply
    1,682.16x = 2,321.22 × 1,240.30
  4. Step 4: Simplify right side
    1,682.16x = 2,879,009.17
  5. Step 5: Solve for x
    x = 2,879,009.17/1,682.16
  6. Step 6: Final answer
    x = 1,711.50

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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.