Home / 8,420.73-11,620.09-4,643.93

Finding the Fourth Proportional to 8,420.73, 11,620.09 and 4,643.93

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Solution

The fourth proportional to 8,420.73, 11,620.09 and 4,643.93 is: 6,408.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,420.73 : 11,620.09 = 4,643.93 : x
  2. Step 2: Convert to fraction form
    8,420.73/11,620.09 = 4,643.93/x
  3. Step 3: Cross multiply
    8,420.73x = 11,620.09 × 4,643.93
  4. Step 4: Simplify right side
    8,420.73x = 53,962,919.41
  5. Step 5: Solve for x
    x = 53,962,919.41/8,420.73
  6. Step 6: Final answer
    x = 6,408.35

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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.