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Finding the Fourth Proportional to 9,892.78, 13,652.03 and 5,416.81

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Solution

The fourth proportional to 9,892.78, 13,652.03 and 5,416.81 is: 7,475.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,892.78 : 13,652.03 = 5,416.81 : x
  2. Step 2: Convert to fraction form
    9,892.78/13,652.03 = 5,416.81/x
  3. Step 3: Cross multiply
    9,892.78x = 13,652.03 × 5,416.81
  4. Step 4: Simplify right side
    9,892.78x = 73,950,384.36
  5. Step 5: Solve for x
    x = 73,950,384.36/9,892.78
  6. Step 6: Final answer
    x = 7,475.19

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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.