Home / 9,128.81-13,693.22-2,972.81

Finding the Fourth Proportional to 9,128.81, 13,693.22 and 2,972.81

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Solution

The fourth proportional to 9,128.81, 13,693.22 and 2,972.81 is: 4,459.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,128.81 : 13,693.22 = 2,972.81 : x
  2. Step 2: Convert to fraction form
    9,128.81/13,693.22 = 2,972.81/x
  3. Step 3: Cross multiply
    9,128.81x = 13,693.22 × 2,972.81
  4. Step 4: Simplify right side
    9,128.81x = 40,707,371.87
  5. Step 5: Solve for x
    x = 40,707,371.87/9,128.81
  6. Step 6: Final answer
    x = 4,459.22

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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.