Home / 2,890.62-3,989.68-1,828.32

Finding the Fourth Proportional to 2,890.62, 3,989.68 and 1,828.32

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Solution

The fourth proportional to 2,890.62, 3,989.68 and 1,828.32 is: 2,523.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,890.62 : 3,989.68 = 1,828.32 : x
  2. Step 2: Convert to fraction form
    2,890.62/3,989.68 = 1,828.32/x
  3. Step 3: Cross multiply
    2,890.62x = 3,989.68 × 1,828.32
  4. Step 4: Simplify right side
    2,890.62x = 7,294,411.74
  5. Step 5: Solve for x
    x = 7,294,411.74/2,890.62
  6. Step 6: Final answer
    x = 2,523.48

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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.