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Finding the Fourth Proportional to 6,610.71, 9,915.06 and 1,680.03

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Solution

The fourth proportional to 6,610.71, 9,915.06 and 1,680.03 is: 2,519.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,610.71 : 9,915.06 = 1,680.03 : x
  2. Step 2: Convert to fraction form
    6,610.71/9,915.06 = 1,680.03/x
  3. Step 3: Cross multiply
    6,610.71x = 9,915.06 × 1,680.03
  4. Step 4: Simplify right side
    6,610.71x = 16,657,598.25
  5. Step 5: Solve for x
    x = 16,657,598.25/6,610.71
  6. Step 6: Final answer
    x = 2,519.79

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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.