Home / 7,830.52-11,742.86-3,148.95

Finding the Fourth Proportional to 7,830.52, 11,742.86 and 3,148.95

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Solution

The fourth proportional to 7,830.52, 11,742.86 and 3,148.95 is: 4,722.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,830.52 : 11,742.86 = 3,148.95 : x
  2. Step 2: Convert to fraction form
    7,830.52/11,742.86 = 3,148.95/x
  3. Step 3: Cross multiply
    7,830.52x = 11,742.86 × 3,148.95
  4. Step 4: Simplify right side
    7,830.52x = 36,977,679.00
  5. Step 5: Solve for x
    x = 36,977,679.00/7,830.52
  6. Step 6: Final answer
    x = 4,722.25

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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.