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Finding the Fourth Proportional to 9,078.40, 13,618.02 and 4,704.40

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Solution

The fourth proportional to 9,078.40, 13,618.02 and 4,704.40 is: 7,056.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,078.40 : 13,618.02 = 4,704.40 : x
  2. Step 2: Convert to fraction form
    9,078.40/13,618.02 = 4,704.40/x
  3. Step 3: Cross multiply
    9,078.40x = 13,618.02 × 4,704.40
  4. Step 4: Simplify right side
    9,078.40x = 64,064,613.29
  5. Step 5: Solve for x
    x = 64,064,613.29/9,078.40
  6. Step 6: Final answer
    x = 7,056.82

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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.