Home / 7,103.30-9,815.58-6,761.88

Finding the Fourth Proportional to 7,103.30, 9,815.58 and 6,761.88

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Solution

The fourth proportional to 7,103.30, 9,815.58 and 6,761.88 is: 9,343.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,103.30 : 9,815.58 = 6,761.88 : x
  2. Step 2: Convert to fraction form
    7,103.30/9,815.58 = 6,761.88/x
  3. Step 3: Cross multiply
    7,103.30x = 9,815.58 × 6,761.88
  4. Step 4: Simplify right side
    7,103.30x = 66,371,774.09
  5. Step 5: Solve for x
    x = 66,371,774.09/7,103.30
  6. Step 6: Final answer
    x = 9,343.80

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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.