Home / 2,983.36-4,118.16-2,145.28

Finding the Fourth Proportional to 2,983.36, 4,118.16 and 2,145.28

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Solution

The fourth proportional to 2,983.36, 4,118.16 and 2,145.28 is: 2,961.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,983.36 : 4,118.16 = 2,145.28 : x
  2. Step 2: Convert to fraction form
    2,983.36/4,118.16 = 2,145.28/x
  3. Step 3: Cross multiply
    2,983.36x = 4,118.16 × 2,145.28
  4. Step 4: Simplify right side
    2,983.36x = 8,834,606.28
  5. Step 5: Solve for x
    x = 8,834,606.28/2,983.36
  6. Step 6: Final answer
    x = 2,961.29

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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.