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Finding the Fourth Proportional to 7,704.55, 10,653.02 and 6,720.40

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Solution

The fourth proportional to 7,704.55, 10,653.02 and 6,720.40 is: 9,292.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,704.55 : 10,653.02 = 6,720.40 : x
  2. Step 2: Convert to fraction form
    7,704.55/10,653.02 = 6,720.40/x
  3. Step 3: Cross multiply
    7,704.55x = 10,653.02 × 6,720.40
  4. Step 4: Simplify right side
    7,704.55x = 71,592,555.61
  5. Step 5: Solve for x
    x = 71,592,555.61/7,704.55
  6. Step 6: Final answer
    x = 9,292.24

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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.