Home / 5,645.36-7,790.14-3,127.57

Finding the Fourth Proportional to 5,645.36, 7,790.14 and 3,127.57

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Solution

The fourth proportional to 5,645.36, 7,790.14 and 3,127.57 is: 4,315.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,645.36 : 7,790.14 = 3,127.57 : x
  2. Step 2: Convert to fraction form
    5,645.36/7,790.14 = 3,127.57/x
  3. Step 3: Cross multiply
    5,645.36x = 7,790.14 × 3,127.57
  4. Step 4: Simplify right side
    5,645.36x = 24,364,234.17
  5. Step 5: Solve for x
    x = 24,364,234.17/5,645.36
  6. Step 6: Final answer
    x = 4,315.80

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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.