Home / 8,921.28-13,382.69-2,347.50

Finding the Fourth Proportional to 8,921.28, 13,382.69 and 2,347.50

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Solution

The fourth proportional to 8,921.28, 13,382.69 and 2,347.50 is: 3,521.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,921.28 : 13,382.69 = 2,347.50 : x
  2. Step 2: Convert to fraction form
    8,921.28/13,382.69 = 2,347.50/x
  3. Step 3: Cross multiply
    8,921.28x = 13,382.69 × 2,347.50
  4. Step 4: Simplify right side
    8,921.28x = 31,415,853.04
  5. Step 5: Solve for x
    x = 31,415,853.04/8,921.28
  6. Step 6: Final answer
    x = 3,521.45

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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.