Home / 4,749.85-6,555.69-3,131.91

Finding the Fourth Proportional to 4,749.85, 6,555.69 and 3,131.91

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Solution

The fourth proportional to 4,749.85, 6,555.69 and 3,131.91 is: 4,322.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,749.85 : 6,555.69 = 3,131.91 : x
  2. Step 2: Convert to fraction form
    4,749.85/6,555.69 = 3,131.91/x
  3. Step 3: Cross multiply
    4,749.85x = 6,555.69 × 3,131.91
  4. Step 4: Simplify right side
    4,749.85x = 20,531,831.07
  5. Step 5: Solve for x
    x = 20,531,831.07/4,749.85
  6. Step 6: Final answer
    x = 4,322.63

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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.