Home / 8,277.52-11,421.96-4,920.40

Finding the Fourth Proportional to 8,277.52, 11,421.96 and 4,920.40

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Solution

The fourth proportional to 8,277.52, 11,421.96 and 4,920.40 is: 6,789.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,277.52 : 11,421.96 = 4,920.40 : x
  2. Step 2: Convert to fraction form
    8,277.52/11,421.96 = 4,920.40/x
  3. Step 3: Cross multiply
    8,277.52x = 11,421.96 × 4,920.40
  4. Step 4: Simplify right side
    8,277.52x = 56,200,611.98
  5. Step 5: Solve for x
    x = 56,200,611.98/8,277.52
  6. Step 6: Final answer
    x = 6,789.55

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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.