Home / 3,890.32-5,826.90-3,215.55

Finding the Fourth Proportional to 3,890.32, 5,826.90 and 3,215.55

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Solution

The fourth proportional to 3,890.32, 5,826.90 and 3,215.55 is: 4,816.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,890.32 : 5,826.90 = 3,215.55 : x
  2. Step 2: Convert to fraction form
    3,890.32/5,826.90 = 3,215.55/x
  3. Step 3: Cross multiply
    3,890.32x = 5,826.90 × 3,215.55
  4. Step 4: Simplify right side
    3,890.32x = 18,736,710.90
  5. Step 5: Solve for x
    x = 18,736,710.90/3,890.32
  6. Step 6: Final answer
    x = 4,816.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.