Home / 8,430.72-11,631.12-4,892.64

Finding the Fourth Proportional to 8,430.72, 11,631.12 and 4,892.64

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Solution

The fourth proportional to 8,430.72, 11,631.12 and 4,892.64 is: 6,749.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,430.72 : 11,631.12 = 4,892.64 : x
  2. Step 2: Convert to fraction form
    8,430.72/11,631.12 = 4,892.64/x
  3. Step 3: Cross multiply
    8,430.72x = 11,631.12 × 4,892.64
  4. Step 4: Simplify right side
    8,430.72x = 56,906,882.96
  5. Step 5: Solve for x
    x = 56,906,882.96/8,430.72
  6. Step 6: Final answer
    x = 6,749.94

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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.