Home / 4,909.20-7,355.70-4,180.20

Finding the Fourth Proportional to 4,909.20, 7,355.70 and 4,180.20

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Solution

The fourth proportional to 4,909.20, 7,355.70 and 4,180.20 is: 6,263.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,909.20 : 7,355.70 = 4,180.20 : x
  2. Step 2: Convert to fraction form
    4,909.20/7,355.70 = 4,180.20/x
  3. Step 3: Cross multiply
    4,909.20x = 7,355.70 × 4,180.20
  4. Step 4: Simplify right side
    4,909.20x = 30,748,297.14
  5. Step 5: Solve for x
    x = 30,748,297.14/4,909.20
  6. Step 6: Final answer
    x = 6,263.40

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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.