Home / 6,431.39-8,875.65-3,779.66

Finding the Fourth Proportional to 6,431.39, 8,875.65 and 3,779.66

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Solution

The fourth proportional to 6,431.39, 8,875.65 and 3,779.66 is: 5,216.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,431.39 : 8,875.65 = 3,779.66 : x
  2. Step 2: Convert to fraction form
    6,431.39/8,875.65 = 3,779.66/x
  3. Step 3: Cross multiply
    6,431.39x = 8,875.65 × 3,779.66
  4. Step 4: Simplify right side
    6,431.39x = 33,546,894.90
  5. Step 5: Solve for x
    x = 33,546,894.90/6,431.39
  6. Step 6: Final answer
    x = 5,216.12

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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.