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Finding the Fourth Proportional to 7,885.47, 11,812.03 and 6,316.98

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Solution

The fourth proportional to 7,885.47, 11,812.03 and 6,316.98 is: 9,462.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,885.47 : 11,812.03 = 6,316.98 : x
  2. Step 2: Convert to fraction form
    7,885.47/11,812.03 = 6,316.98/x
  3. Step 3: Cross multiply
    7,885.47x = 11,812.03 × 6,316.98
  4. Step 4: Simplify right side
    7,885.47x = 74,616,357.27
  5. Step 5: Solve for x
    x = 74,616,357.27/7,885.47
  6. Step 6: Final answer
    x = 9,462.51

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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.