Home / 2,319.35-3,195.99-2,155.32

Finding the Fourth Proportional to 2,319.35, 3,195.99 and 2,155.32

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Solution

The fourth proportional to 2,319.35, 3,195.99 and 2,155.32 is: 2,969.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,319.35 : 3,195.99 = 2,155.32 : x
  2. Step 2: Convert to fraction form
    2,319.35/3,195.99 = 2,155.32/x
  3. Step 3: Cross multiply
    2,319.35x = 3,195.99 × 2,155.32
  4. Step 4: Simplify right side
    2,319.35x = 6,888,381.17
  5. Step 5: Solve for x
    x = 6,888,381.17/2,319.35
  6. Step 6: Final answer
    x = 2,969.97

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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.