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Finding the Fourth Proportional to 7,477.96, 11,216.10 and 1,931.08

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Solution

The fourth proportional to 7,477.96, 11,216.10 and 1,931.08 is: 2,896.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,477.96 : 11,216.10 = 1,931.08 : x
  2. Step 2: Convert to fraction form
    7,477.96/11,216.10 = 1,931.08/x
  3. Step 3: Cross multiply
    7,477.96x = 11,216.10 × 1,931.08
  4. Step 4: Simplify right side
    7,477.96x = 21,659,186.39
  5. Step 5: Solve for x
    x = 21,659,186.39/7,477.96
  6. Step 6: Final answer
    x = 2,896.40

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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.