Home / 3,215.88-4,826.76-1,985.64

Finding the Fourth Proportional to 3,215.88, 4,826.76 and 1,985.64

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Solution

The fourth proportional to 3,215.88, 4,826.76 and 1,985.64 is: 2,980.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,215.88 : 4,826.76 = 1,985.64 : x
  2. Step 2: Convert to fraction form
    3,215.88/4,826.76 = 1,985.64/x
  3. Step 3: Cross multiply
    3,215.88x = 4,826.76 × 1,985.64
  4. Step 4: Simplify right side
    3,215.88x = 9,584,207.73
  5. Step 5: Solve for x
    x = 9,584,207.73/3,215.88
  6. Step 6: Final answer
    x = 2,980.28

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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.