Home / 5,518.09-7,614.93-3,128.05

Finding the Fourth Proportional to 5,518.09, 7,614.93 and 3,128.05

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Solution

The fourth proportional to 5,518.09, 7,614.93 and 3,128.05 is: 4,316.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,518.09 : 7,614.93 = 3,128.05 : x
  2. Step 2: Convert to fraction form
    5,518.09/7,614.93 = 3,128.05/x
  3. Step 3: Cross multiply
    5,518.09x = 7,614.93 × 3,128.05
  4. Step 4: Simplify right side
    5,518.09x = 23,819,881.79
  5. Step 5: Solve for x
    x = 23,819,881.79/5,518.09
  6. Step 6: Final answer
    x = 4,316.69

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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.