Home / 5,129.81-7,688.03-2,316.55

Finding the Fourth Proportional to 5,129.81, 7,688.03 and 2,316.55

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Solution

The fourth proportional to 5,129.81, 7,688.03 and 2,316.55 is: 3,471.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,129.81 : 7,688.03 = 2,316.55 : x
  2. Step 2: Convert to fraction form
    5,129.81/7,688.03 = 2,316.55/x
  3. Step 3: Cross multiply
    5,129.81x = 7,688.03 × 2,316.55
  4. Step 4: Simplify right side
    5,129.81x = 17,809,675.09
  5. Step 5: Solve for x
    x = 17,809,675.09/5,129.81
  6. Step 6: Final answer
    x = 3,471.80

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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.