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Finding the Fourth Proportional to 6,393.69, 8,823 and 3,560.91

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Solution

The fourth proportional to 6,393.69, 8,823 and 3,560.91 is: 4,913.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,393.69 : 8,823 = 3,560.91 : x
  2. Step 2: Convert to fraction form
    6,393.69/8,823 = 3,560.91/x
  3. Step 3: Cross multiply
    6,393.69x = 8,823 × 3,560.91
  4. Step 4: Simplify right side
    6,393.69x = 31,417,908.93
  5. Step 5: Solve for x
    x = 31,417,908.93/6,393.69
  6. Step 6: Final answer
    x = 4,913.89

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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.