Home / 5,445.80-8,168.70-4,830.20

Finding the Fourth Proportional to 5,445.80, 8,168.70 and 4,830.20

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Solution

The fourth proportional to 5,445.80, 8,168.70 and 4,830.20 is: 7,245.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,445.80 : 8,168.70 = 4,830.20 : x
  2. Step 2: Convert to fraction form
    5,445.80/8,168.70 = 4,830.20/x
  3. Step 3: Cross multiply
    5,445.80x = 8,168.70 × 4,830.20
  4. Step 4: Simplify right side
    5,445.80x = 39,456,454.74
  5. Step 5: Solve for x
    x = 39,456,454.74/5,445.80
  6. Step 6: Final answer
    x = 7,245.30

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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.