Home / 3,117.12-4,301.52-1,790.64

Finding the Fourth Proportional to 3,117.12, 4,301.52 and 1,790.64

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Solution

The fourth proportional to 3,117.12, 4,301.52 and 1,790.64 is: 2,471.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,117.12 : 4,301.52 = 1,790.64 : x
  2. Step 2: Convert to fraction form
    3,117.12/4,301.52 = 1,790.64/x
  3. Step 3: Cross multiply
    3,117.12x = 4,301.52 × 1,790.64
  4. Step 4: Simplify right side
    3,117.12x = 7,702,473.77
  5. Step 5: Solve for x
    x = 7,702,473.77/3,117.12
  6. Step 6: Final answer
    x = 2,471.02

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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.