Home / 4,740.66-7,111.80-1,778.85

Finding the Fourth Proportional to 4,740.66, 7,111.80 and 1,778.85

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Solution

The fourth proportional to 4,740.66, 7,111.80 and 1,778.85 is: 2,668.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,740.66 : 7,111.80 = 1,778.85 : x
  2. Step 2: Convert to fraction form
    4,740.66/7,111.80 = 1,778.85/x
  3. Step 3: Cross multiply
    4,740.66x = 7,111.80 × 1,778.85
  4. Step 4: Simplify right side
    4,740.66x = 12,650,825.43
  5. Step 5: Solve for x
    x = 12,650,825.43/4,740.66
  6. Step 6: Final answer
    x = 2,668.58

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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.