Home / 2,942.64-4,057.16-2,155.32

Finding the Fourth Proportional to 2,942.64, 4,057.16 and 2,155.32

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Solution

The fourth proportional to 2,942.64, 4,057.16 and 2,155.32 is: 2,971.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,942.64 : 4,057.16 = 2,155.32 : x
  2. Step 2: Convert to fraction form
    2,942.64/4,057.16 = 2,155.32/x
  3. Step 3: Cross multiply
    2,942.64x = 4,057.16 × 2,155.32
  4. Step 4: Simplify right side
    2,942.64x = 8,744,467.31
  5. Step 5: Solve for x
    x = 8,744,467.31/2,942.64
  6. Step 6: Final answer
    x = 2,971.64

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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.