Home / 8,856.35-12,212.55-6,840.09

Finding the Fourth Proportional to 8,856.35, 12,212.55 and 6,840.09

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Solution

The fourth proportional to 8,856.35, 12,212.55 and 6,840.09 is: 9,432.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,856.35 : 12,212.55 = 6,840.09 : x
  2. Step 2: Convert to fraction form
    8,856.35/12,212.55 = 6,840.09/x
  3. Step 3: Cross multiply
    8,856.35x = 12,212.55 × 6,840.09
  4. Step 4: Simplify right side
    8,856.35x = 83,534,941.13
  5. Step 5: Solve for x
    x = 83,534,941.13/8,856.35
  6. Step 6: Final answer
    x = 9,432.21

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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.