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Finding the Fourth Proportional to 8,871.42, 13,288.05 and 4,184.40

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Solution

The fourth proportional to 8,871.42, 13,288.05 and 4,184.40 is: 6,267.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,871.42 : 13,288.05 = 4,184.40 : x
  2. Step 2: Convert to fraction form
    8,871.42/13,288.05 = 4,184.40/x
  3. Step 3: Cross multiply
    8,871.42x = 13,288.05 × 4,184.40
  4. Step 4: Simplify right side
    8,871.42x = 55,602,516.42
  5. Step 5: Solve for x
    x = 55,602,516.42/8,871.42
  6. Step 6: Final answer
    x = 6,267.60

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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.