Home / 6,515.40-8,990.70-3,826.33

Finding the Fourth Proportional to 6,515.40, 8,990.70 and 3,826.33

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Solution

The fourth proportional to 6,515.40, 8,990.70 and 3,826.33 is: 5,280.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,515.40 : 8,990.70 = 3,826.33 : x
  2. Step 2: Convert to fraction form
    6,515.40/8,990.70 = 3,826.33/x
  3. Step 3: Cross multiply
    6,515.40x = 8,990.70 × 3,826.33
  4. Step 4: Simplify right side
    6,515.40x = 34,401,385.13
  5. Step 5: Solve for x
    x = 34,401,385.13/6,515.40
  6. Step 6: Final answer
    x = 5,280.01

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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.