Home / 5,316.96-7,974.88-1,421.76

Finding the Fourth Proportional to 5,316.96, 7,974.88 and 1,421.76

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Solution

The fourth proportional to 5,316.96, 7,974.88 and 1,421.76 is: 2,132.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,316.96 : 7,974.88 = 1,421.76 : x
  2. Step 2: Convert to fraction form
    5,316.96/7,974.88 = 1,421.76/x
  3. Step 3: Cross multiply
    5,316.96x = 7,974.88 × 1,421.76
  4. Step 4: Simplify right side
    5,316.96x = 11,338,365.39
  5. Step 5: Solve for x
    x = 11,338,365.39/5,316.96
  6. Step 6: Final answer
    x = 2,132.49

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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.