Home / 5,178.40-7,762.13-3,716.76

Finding the Fourth Proportional to 5,178.40, 7,762.13 and 3,716.76

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Solution

The fourth proportional to 5,178.40, 7,762.13 and 3,716.76 is: 5,571.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,178.40 : 7,762.13 = 3,716.76 : x
  2. Step 2: Convert to fraction form
    5,178.40/7,762.13 = 3,716.76/x
  3. Step 3: Cross multiply
    5,178.40x = 7,762.13 × 3,716.76
  4. Step 4: Simplify right side
    5,178.40x = 28,849,974.30
  5. Step 5: Solve for x
    x = 28,849,974.30/5,178.40
  6. Step 6: Final answer
    x = 5,571.21

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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.