Home / 8,688.47-13,032.72-2,114.60

Finding the Fourth Proportional to 8,688.47, 13,032.72 and 2,114.60

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Solution

The fourth proportional to 8,688.47, 13,032.72 and 2,114.60 is: 3,171.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,688.47 : 13,032.72 = 2,114.60 : x
  2. Step 2: Convert to fraction form
    8,688.47/13,032.72 = 2,114.60/x
  3. Step 3: Cross multiply
    8,688.47x = 13,032.72 × 2,114.60
  4. Step 4: Simplify right side
    8,688.47x = 27,558,924.55
  5. Step 5: Solve for x
    x = 27,558,924.55/8,688.47
  6. Step 6: Final answer
    x = 3,171.90

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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.