Home / 3,880.32-5,354.85-2,111.93

Finding the Fourth Proportional to 3,880.32, 5,354.85 and 2,111.93

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Solution

The fourth proportional to 3,880.32, 5,354.85 and 2,111.93 is: 2,914.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,880.32 : 5,354.85 = 2,111.93 : x
  2. Step 2: Convert to fraction form
    3,880.32/5,354.85 = 2,111.93/x
  3. Step 3: Cross multiply
    3,880.32x = 5,354.85 × 2,111.93
  4. Step 4: Simplify right side
    3,880.32x = 11,309,041.59
  5. Step 5: Solve for x
    x = 11,309,041.59/3,880.32
  6. Step 6: Final answer
    x = 2,914.46

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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.