Home / 8,721.37-12,035.42-4,742.48

Finding the Fourth Proportional to 8,721.37, 12,035.42 and 4,742.48

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Solution

The fourth proportional to 8,721.37, 12,035.42 and 4,742.48 is: 6,544.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,721.37 : 12,035.42 = 4,742.48 : x
  2. Step 2: Convert to fraction form
    8,721.37/12,035.42 = 4,742.48/x
  3. Step 3: Cross multiply
    8,721.37x = 12,035.42 × 4,742.48
  4. Step 4: Simplify right side
    8,721.37x = 57,077,738.64
  5. Step 5: Solve for x
    x = 57,077,738.64/8,721.37
  6. Step 6: Final answer
    x = 6,544.59

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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.