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Finding the Fourth Proportional to 8,871.37, 13,280.47 and 8,555.93

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Solution

The fourth proportional to 8,871.37, 13,280.47 and 8,555.93 is: 12,808.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,871.37 : 13,280.47 = 8,555.93 : x
  2. Step 2: Convert to fraction form
    8,871.37/13,280.47 = 8,555.93/x
  3. Step 3: Cross multiply
    8,871.37x = 13,280.47 × 8,555.93
  4. Step 4: Simplify right side
    8,871.37x = 113,626,783.50
  5. Step 5: Solve for x
    x = 113,626,783.50/8,871.37
  6. Step 6: Final answer
    x = 12,808.26

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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.