Home / 9,505.85-13,120.88-6,148.80

Finding the Fourth Proportional to 9,505.85, 13,120.88 and 6,148.80

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Solution

The fourth proportional to 9,505.85, 13,120.88 and 6,148.80 is: 8,487.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,505.85 : 13,120.88 = 6,148.80 : x
  2. Step 2: Convert to fraction form
    9,505.85/13,120.88 = 6,148.80/x
  3. Step 3: Cross multiply
    9,505.85x = 13,120.88 × 6,148.80
  4. Step 4: Simplify right side
    9,505.85x = 80,677,636.20
  5. Step 5: Solve for x
    x = 80,677,636.20/9,505.85
  6. Step 6: Final answer
    x = 8,487.16

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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.