Home / 3,851.76-5,316.12-2,173.68

Finding the Fourth Proportional to 3,851.76, 5,316.12 and 2,173.68

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Solution

The fourth proportional to 3,851.76, 5,316.12 and 2,173.68 is: 3,000.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,851.76 : 5,316.12 = 2,173.68 : x
  2. Step 2: Convert to fraction form
    3,851.76/5,316.12 = 2,173.68/x
  3. Step 3: Cross multiply
    3,851.76x = 5,316.12 × 2,173.68
  4. Step 4: Simplify right side
    3,851.76x = 11,555,543.72
  5. Step 5: Solve for x
    x = 11,555,543.72/3,851.76
  6. Step 6: Final answer
    x = 3,000.07

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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.