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Finding the Fourth Proportional to 8,960.51, 13,439.00 and 8,515.98

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Solution

The fourth proportional to 8,960.51, 13,439.00 and 8,515.98 is: 12,772.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,960.51 : 13,439.00 = 8,515.98 : x
  2. Step 2: Convert to fraction form
    8,960.51/13,439.00 = 8,515.98/x
  3. Step 3: Cross multiply
    8,960.51x = 13,439.00 × 8,515.98
  4. Step 4: Simplify right side
    8,960.51x = 114,446,276.51
  5. Step 5: Solve for x
    x = 114,446,276.51/8,960.51
  6. Step 6: Final answer
    x = 12,772.29

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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.