Home / 3,260.40-4,890.39-1,410.21

Finding the Fourth Proportional to 3,260.40, 4,890.39 and 1,410.21

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Solution

The fourth proportional to 3,260.40, 4,890.39 and 1,410.21 is: 2,115.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,260.40 : 4,890.39 = 1,410.21 : x
  2. Step 2: Convert to fraction form
    3,260.40/4,890.39 = 1,410.21/x
  3. Step 3: Cross multiply
    3,260.40x = 4,890.39 × 1,410.21
  4. Step 4: Simplify right side
    3,260.40x = 6,896,476.88
  5. Step 5: Solve for x
    x = 6,896,476.88/3,260.40
  6. Step 6: Final answer
    x = 2,115.22

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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.