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Finding the Fourth Proportional to 8,913.71, 13,383.71 and 4,972.67

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Solution

The fourth proportional to 8,913.71, 13,383.71 and 4,972.67 is: 7,466.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,913.71 : 13,383.71 = 4,972.67 : x
  2. Step 2: Convert to fraction form
    8,913.71/13,383.71 = 4,972.67/x
  3. Step 3: Cross multiply
    8,913.71x = 13,383.71 × 4,972.67
  4. Step 4: Simplify right side
    8,913.71x = 66,552,681.42
  5. Step 5: Solve for x
    x = 66,552,681.42/8,913.71
  6. Step 6: Final answer
    x = 7,466.33

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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.