Home / 8,487.64-11,709.75-6,254.85

Finding the Fourth Proportional to 8,487.64, 11,709.75 and 6,254.85

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Solution

The fourth proportional to 8,487.64, 11,709.75 and 6,254.85 is: 8,629.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,487.64 : 11,709.75 = 6,254.85 : x
  2. Step 2: Convert to fraction form
    8,487.64/11,709.75 = 6,254.85/x
  3. Step 3: Cross multiply
    8,487.64x = 11,709.75 × 6,254.85
  4. Step 4: Simplify right side
    8,487.64x = 73,242,729.79
  5. Step 5: Solve for x
    x = 73,242,729.79/8,487.64
  6. Step 6: Final answer
    x = 8,629.34

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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.