Home / 6,420.84-8,860.68-3,626.40

Finding the Fourth Proportional to 6,420.84, 8,860.68 and 3,626.40

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Solution

The fourth proportional to 6,420.84, 8,860.68 and 3,626.40 is: 5,004.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,420.84 : 8,860.68 = 3,626.40 : x
  2. Step 2: Convert to fraction form
    6,420.84/8,860.68 = 3,626.40/x
  3. Step 3: Cross multiply
    6,420.84x = 8,860.68 × 3,626.40
  4. Step 4: Simplify right side
    6,420.84x = 32,132,369.95
  5. Step 5: Solve for x
    x = 32,132,369.95/6,420.84
  6. Step 6: Final answer
    x = 5,004.39

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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.