Home / 4,881.20-7,316.54-2,109.18

Finding the Fourth Proportional to 4,881.20, 7,316.54 and 2,109.18

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Solution

The fourth proportional to 4,881.20, 7,316.54 and 2,109.18 is: 3,161.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,881.20 : 7,316.54 = 2,109.18 : x
  2. Step 2: Convert to fraction form
    4,881.20/7,316.54 = 2,109.18/x
  3. Step 3: Cross multiply
    4,881.20x = 7,316.54 × 2,109.18
  4. Step 4: Simplify right side
    4,881.20x = 15,431,899.84
  5. Step 5: Solve for x
    x = 15,431,899.84/4,881.20
  6. Step 6: Final answer
    x = 3,161.50

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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.