Home / 6,923.79-9,555.21-3,780

Finding the Fourth Proportional to 6,923.79, 9,555.21 and 3,780

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Solution

The fourth proportional to 6,923.79, 9,555.21 and 3,780 is: 5,216.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,923.79 : 9,555.21 = 3,780 : x
  2. Step 2: Convert to fraction form
    6,923.79/9,555.21 = 3,780/x
  3. Step 3: Cross multiply
    6,923.79x = 9,555.21 × 3,780
  4. Step 4: Simplify right side
    6,923.79x = 36,118,693.80
  5. Step 5: Solve for x
    x = 36,118,693.80/6,923.79
  6. Step 6: Final answer
    x = 5,216.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.