Home / 7,603.40-11,401.68-3,218.60

Finding the Fourth Proportional to 7,603.40, 11,401.68 and 3,218.60

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Solution

The fourth proportional to 7,603.40, 11,401.68 and 3,218.60 is: 4,826.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,603.40 : 11,401.68 = 3,218.60 : x
  2. Step 2: Convert to fraction form
    7,603.40/11,401.68 = 3,218.60/x
  3. Step 3: Cross multiply
    7,603.40x = 11,401.68 × 3,218.60
  4. Step 4: Simplify right side
    7,603.40x = 36,697,447.25
  5. Step 5: Solve for x
    x = 36,697,447.25/7,603.40
  6. Step 6: Final answer
    x = 4,826.45

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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.