Home / 8,943.29-12,342.06-5,405.81

Finding the Fourth Proportional to 8,943.29, 12,342.06 and 5,405.81

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Solution

The fourth proportional to 8,943.29, 12,342.06 and 5,405.81 is: 7,460.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,943.29 : 12,342.06 = 5,405.81 : x
  2. Step 2: Convert to fraction form
    8,943.29/12,342.06 = 5,405.81/x
  3. Step 3: Cross multiply
    8,943.29x = 12,342.06 × 5,405.81
  4. Step 4: Simplify right side
    8,943.29x = 66,718,769.66
  5. Step 5: Solve for x
    x = 66,718,769.66/8,943.29
  6. Step 6: Final answer
    x = 7,460.21

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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.