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Finding the Fourth Proportional to 4,995.40, 7,482.30 and 4,448.20

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Solution

The fourth proportional to 4,995.40, 7,482.30 and 4,448.20 is: 6,662.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,995.40 : 7,482.30 = 4,448.20 : x
  2. Step 2: Convert to fraction form
    4,995.40/7,482.30 = 4,448.20/x
  3. Step 3: Cross multiply
    4,995.40x = 7,482.30 × 4,448.20
  4. Step 4: Simplify right side
    4,995.40x = 33,282,766.86
  5. Step 5: Solve for x
    x = 33,282,766.86/4,995.40
  6. Step 6: Final answer
    x = 6,662.68

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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.