Home / 2,885.48-3,979.32-1,890.39

Finding the Fourth Proportional to 2,885.48, 3,979.32 and 1,890.39

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Solution

The fourth proportional to 2,885.48, 3,979.32 and 1,890.39 is: 2,607.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,885.48 : 3,979.32 = 1,890.39 : x
  2. Step 2: Convert to fraction form
    2,885.48/3,979.32 = 1,890.39/x
  3. Step 3: Cross multiply
    2,885.48x = 3,979.32 × 1,890.39
  4. Step 4: Simplify right side
    2,885.48x = 7,522,466.73
  5. Step 5: Solve for x
    x = 7,522,466.73/2,885.48
  6. Step 6: Final answer
    x = 2,607.01

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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.