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Finding the Fourth Proportional to 6,315.64, 8,712.84 and 4,427.56

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Solution

The fourth proportional to 6,315.64, 8,712.84 and 4,427.56 is: 6,108.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,315.64 : 8,712.84 = 4,427.56 : x
  2. Step 2: Convert to fraction form
    6,315.64/8,712.84 = 4,427.56/x
  3. Step 3: Cross multiply
    6,315.64x = 8,712.84 × 4,427.56
  4. Step 4: Simplify right side
    6,315.64x = 38,576,621.87
  5. Step 5: Solve for x
    x = 38,576,621.87/6,315.64
  6. Step 6: Final answer
    x = 6,108.11

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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.