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Finding the Fourth Proportional to 6,407.75, 9,612.79 and 2,899.41

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Solution

The fourth proportional to 6,407.75, 9,612.79 and 2,899.41 is: 4,349.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,407.75 : 9,612.79 = 2,899.41 : x
  2. Step 2: Convert to fraction form
    6,407.75/9,612.79 = 2,899.41/x
  3. Step 3: Cross multiply
    6,407.75x = 9,612.79 × 2,899.41
  4. Step 4: Simplify right side
    6,407.75x = 27,871,419.45
  5. Step 5: Solve for x
    x = 27,871,419.45/6,407.75
  6. Step 6: Final answer
    x = 4,349.64

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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.