Home / 8,642.08-12,956.40-3,707.68

Finding the Fourth Proportional to 8,642.08, 12,956.40 and 3,707.68

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Solution

The fourth proportional to 8,642.08, 12,956.40 and 3,707.68 is: 5,558.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,642.08 : 12,956.40 = 3,707.68 : x
  2. Step 2: Convert to fraction form
    8,642.08/12,956.40 = 3,707.68/x
  3. Step 3: Cross multiply
    8,642.08x = 12,956.40 × 3,707.68
  4. Step 4: Simplify right side
    8,642.08x = 48,038,185.15
  5. Step 5: Solve for x
    x = 48,038,185.15/8,642.08
  6. Step 6: Final answer
    x = 5,558.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.