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Finding the Fourth Proportional to 8,871.10, 13,257.60 and 8,358.98

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Solution

The fourth proportional to 8,871.10, 13,257.60 and 8,358.98 is: 12,492.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,871.10 : 13,257.60 = 8,358.98 : x
  2. Step 2: Convert to fraction form
    8,871.10/13,257.60 = 8,358.98/x
  3. Step 3: Cross multiply
    8,871.10x = 13,257.60 × 8,358.98
  4. Step 4: Simplify right side
    8,871.10x = 110,820,013.25
  5. Step 5: Solve for x
    x = 110,820,013.25/8,871.10
  6. Step 6: Final answer
    x = 12,492.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.