Home / 6,405.30-9,610.65-3,116.70

Finding the Fourth Proportional to 6,405.30, 9,610.65 and 3,116.70

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Solution

The fourth proportional to 6,405.30, 9,610.65 and 3,116.70 is: 4,676.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,405.30 : 9,610.65 = 3,116.70 : x
  2. Step 2: Convert to fraction form
    6,405.30/9,610.65 = 3,116.70/x
  3. Step 3: Cross multiply
    6,405.30x = 9,610.65 × 3,116.70
  4. Step 4: Simplify right side
    6,405.30x = 29,953,512.86
  5. Step 5: Solve for x
    x = 29,953,512.86/6,405.30
  6. Step 6: Final answer
    x = 4,676.36

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1.5x scale

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.