Home / 6,880.14-10,320.18-1,686

Finding the Fourth Proportional to 6,880.14, 10,320.18 and 1,686

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Solution

The fourth proportional to 6,880.14, 10,320.18 and 1,686 is: 2,528.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,880.14 : 10,320.18 = 1,686 : x
  2. Step 2: Convert to fraction form
    6,880.14/10,320.18 = 1,686/x
  3. Step 3: Cross multiply
    6,880.14x = 10,320.18 × 1,686
  4. Step 4: Simplify right side
    6,880.14x = 17,399,823.48
  5. Step 5: Solve for x
    x = 17,399,823.48/6,880.14
  6. Step 6: Final answer
    x = 2,528.99

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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.