Home / 5,645.30-7,790.31-3,127.52

Finding the Fourth Proportional to 5,645.30, 7,790.31 and 3,127.52

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Solution

The fourth proportional to 5,645.30, 7,790.31 and 3,127.52 is: 4,315.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,645.30 : 7,790.31 = 3,127.52 : x
  2. Step 2: Convert to fraction form
    5,645.30/7,790.31 = 3,127.52/x
  3. Step 3: Cross multiply
    5,645.30x = 7,790.31 × 3,127.52
  4. Step 4: Simplify right side
    5,645.30x = 24,364,369.81
  5. Step 5: Solve for x
    x = 24,364,369.81/5,645.30
  6. Step 6: Final answer
    x = 4,315.87

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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.