Home / 6,918.84-10,381.91-5,285.88

Finding the Fourth Proportional to 6,918.84, 10,381.91 and 5,285.88

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Solution

The fourth proportional to 6,918.84, 10,381.91 and 5,285.88 is: 7,931.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,918.84 : 10,381.91 = 5,285.88 : x
  2. Step 2: Convert to fraction form
    6,918.84/10,381.91 = 5,285.88/x
  3. Step 3: Cross multiply
    6,918.84x = 10,381.91 × 5,285.88
  4. Step 4: Simplify right side
    6,918.84x = 54,877,504.00
  5. Step 5: Solve for x
    x = 54,877,504.00/6,918.84
  6. Step 6: Final answer
    x = 7,931.60

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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.