Home / 4,778.80-7,170.22-2,315.45

Finding the Fourth Proportional to 4,778.80, 7,170.22 and 2,315.45

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Solution

The fourth proportional to 4,778.80, 7,170.22 and 2,315.45 is: 3,474.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,778.80 : 7,170.22 = 2,315.45 : x
  2. Step 2: Convert to fraction form
    4,778.80/7,170.22 = 2,315.45/x
  3. Step 3: Cross multiply
    4,778.80x = 7,170.22 × 2,315.45
  4. Step 4: Simplify right side
    4,778.80x = 16,602,285.90
  5. Step 5: Solve for x
    x = 16,602,285.90/4,778.80
  6. Step 6: Final answer
    x = 3,474.15

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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.