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Finding the Fourth Proportional to 8,973.84, 13,439.88 and 8,662.38

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Solution

The fourth proportional to 8,973.84, 13,439.88 and 8,662.38 is: 12,973.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,973.84 : 13,439.88 = 8,662.38 : x
  2. Step 2: Convert to fraction form
    8,973.84/13,439.88 = 8,662.38/x
  3. Step 3: Cross multiply
    8,973.84x = 13,439.88 × 8,662.38
  4. Step 4: Simplify right side
    8,973.84x = 116,421,347.71
  5. Step 5: Solve for x
    x = 116,421,347.71/8,973.84
  6. Step 6: Final answer
    x = 12,973.41

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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.