Home / 9,878.69-13,622.88-6,476.79

Finding the Fourth Proportional to 9,878.69, 13,622.88 and 6,476.79

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Solution

The fourth proportional to 9,878.69, 13,622.88 and 6,476.79 is: 8,931.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,878.69 : 13,622.88 = 6,476.79 : x
  2. Step 2: Convert to fraction form
    9,878.69/13,622.88 = 6,476.79/x
  3. Step 3: Cross multiply
    9,878.69x = 13,622.88 × 6,476.79
  4. Step 4: Simplify right side
    9,878.69x = 88,232,608.33
  5. Step 5: Solve for x
    x = 88,232,608.33/9,878.69
  6. Step 6: Final answer
    x = 8,931.61

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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.