Home / 3,826.50-5,280.57-2,170.50

Finding the Fourth Proportional to 3,826.50, 5,280.57 and 2,170.50

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Solution

The fourth proportional to 3,826.50, 5,280.57 and 2,170.50 is: 2,995.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,826.50 : 5,280.57 = 2,170.50 : x
  2. Step 2: Convert to fraction form
    3,826.50/5,280.57 = 2,170.50/x
  3. Step 3: Cross multiply
    3,826.50x = 5,280.57 × 2,170.50
  4. Step 4: Simplify right side
    3,826.50x = 11,461,477.19
  5. Step 5: Solve for x
    x = 11,461,477.19/3,826.50
  6. Step 6: Final answer
    x = 2,995.29

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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.