Home / 6,430.32-8,874.36-5,380.56

Finding the Fourth Proportional to 6,430.32, 8,874.36 and 5,380.56

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Solution

The fourth proportional to 6,430.32, 8,874.36 and 5,380.56 is: 7,425.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,430.32 : 8,874.36 = 5,380.56 : x
  2. Step 2: Convert to fraction form
    6,430.32/8,874.36 = 5,380.56/x
  3. Step 3: Cross multiply
    6,430.32x = 8,874.36 × 5,380.56
  4. Step 4: Simplify right side
    6,430.32x = 47,749,026.44
  5. Step 5: Solve for x
    x = 47,749,026.44/6,430.32
  6. Step 6: Final answer
    x = 7,425.61

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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.