Home / 8,314.72-11,475.12-6,215.20

Finding the Fourth Proportional to 8,314.72, 11,475.12 and 6,215.20

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Solution

The fourth proportional to 8,314.72, 11,475.12 and 6,215.20 is: 8,577.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,314.72 : 11,475.12 = 6,215.20 : x
  2. Step 2: Convert to fraction form
    8,314.72/11,475.12 = 6,215.20/x
  3. Step 3: Cross multiply
    8,314.72x = 11,475.12 × 6,215.20
  4. Step 4: Simplify right side
    8,314.72x = 71,320,165.82
  5. Step 5: Solve for x
    x = 71,320,165.82/8,314.72
  6. Step 6: Final answer
    x = 8,577.58

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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.