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Finding the Fourth Proportional to 6,988.17, 10,485.90 and 6,584.79

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Solution

The fourth proportional to 6,988.17, 10,485.90 and 6,584.79 is: 9,880.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,988.17 : 10,485.90 = 6,584.79 : x
  2. Step 2: Convert to fraction form
    6,988.17/10,485.90 = 6,584.79/x
  3. Step 3: Cross multiply
    6,988.17x = 10,485.90 × 6,584.79
  4. Step 4: Simplify right side
    6,988.17x = 69,047,449.46
  5. Step 5: Solve for x
    x = 69,047,449.46/6,988.17
  6. Step 6: Final answer
    x = 9,880.62

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1.5x scale

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.