Home / 8,664.40-11,953.67-5,681.89

Finding the Fourth Proportional to 8,664.40, 11,953.67 and 5,681.89

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Solution

The fourth proportional to 8,664.40, 11,953.67 and 5,681.89 is: 7,838.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,664.40 : 11,953.67 = 5,681.89 : x
  2. Step 2: Convert to fraction form
    8,664.40/11,953.67 = 5,681.89/x
  3. Step 3: Cross multiply
    8,664.40x = 11,953.67 × 5,681.89
  4. Step 4: Simplify right side
    8,664.40x = 67,919,438.04
  5. Step 5: Solve for x
    x = 67,919,438.04/8,664.40
  6. Step 6: Final answer
    x = 7,838.91

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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.