Home / 2,135.16-2,946.42-1,238.76

Finding the Fourth Proportional to 2,135.16, 2,946.42 and 1,238.76

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Solution

The fourth proportional to 2,135.16, 2,946.42 and 1,238.76 is: 1,709.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,135.16 : 2,946.42 = 1,238.76 : x
  2. Step 2: Convert to fraction form
    2,135.16/2,946.42 = 1,238.76/x
  3. Step 3: Cross multiply
    2,135.16x = 2,946.42 × 1,238.76
  4. Step 4: Simplify right side
    2,135.16x = 3,649,907.24
  5. Step 5: Solve for x
    x = 3,649,907.24/2,135.16
  6. Step 6: Final answer
    x = 1,709.43

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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.