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Finding the Fourth Proportional to 8,587.36, 12,881.08 and 3,973.60

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Solution

The fourth proportional to 8,587.36, 12,881.08 and 3,973.60 is: 5,960.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,587.36 : 12,881.08 = 3,973.60 : x
  2. Step 2: Convert to fraction form
    8,587.36/12,881.08 = 3,973.60/x
  3. Step 3: Cross multiply
    8,587.36x = 12,881.08 × 3,973.60
  4. Step 4: Simplify right side
    8,587.36x = 51,184,259.49
  5. Step 5: Solve for x
    x = 51,184,259.49/8,587.36
  6. Step 6: Final answer
    x = 5,960.42

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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.