Home / 9,276.75-13,915.13-3,120.75

Finding the Fourth Proportional to 9,276.75, 13,915.13 and 3,120.75

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Solution

The fourth proportional to 9,276.75, 13,915.13 and 3,120.75 is: 4,681.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,276.75 : 13,915.13 = 3,120.75 : x
  2. Step 2: Convert to fraction form
    9,276.75/13,915.13 = 3,120.75/x
  3. Step 3: Cross multiply
    9,276.75x = 13,915.13 × 3,120.75
  4. Step 4: Simplify right side
    9,276.75x = 43,425,626.34
  5. Step 5: Solve for x
    x = 43,425,626.34/9,276.75
  6. Step 6: Final answer
    x = 4,681.13

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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.