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Finding the Fourth Proportional to 9,420.88, 12,998.18 and 5,887.68

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Solution

The fourth proportional to 9,420.88, 12,998.18 and 5,887.68 is: 8,123.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,420.88 : 12,998.18 = 5,887.68 : x
  2. Step 2: Convert to fraction form
    9,420.88/12,998.18 = 5,887.68/x
  3. Step 3: Cross multiply
    9,420.88x = 12,998.18 × 5,887.68
  4. Step 4: Simplify right side
    9,420.88x = 76,529,124.42
  5. Step 5: Solve for x
    x = 76,529,124.42/9,420.88
  6. Step 6: Final answer
    x = 8,123.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.