Home / 8,451.72-11,661.96-4,915.08

Finding the Fourth Proportional to 8,451.72, 11,661.96 and 4,915.08

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Solution

The fourth proportional to 8,451.72, 11,661.96 and 4,915.08 is: 6,781.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,451.72 : 11,661.96 = 4,915.08 : x
  2. Step 2: Convert to fraction form
    8,451.72/11,661.96 = 4,915.08/x
  3. Step 3: Cross multiply
    8,451.72x = 11,661.96 × 4,915.08
  4. Step 4: Simplify right side
    8,451.72x = 57,319,466.36
  5. Step 5: Solve for x
    x = 57,319,466.36/8,451.72
  6. Step 6: Final answer
    x = 6,781.99

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1.5x scale

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.