Home / 5,674.15-7,830.28-3,156.49

Finding the Fourth Proportional to 5,674.15, 7,830.28 and 3,156.49

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Solution

The fourth proportional to 5,674.15, 7,830.28 and 3,156.49 is: 4,355.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,674.15 : 7,830.28 = 3,156.49 : x
  2. Step 2: Convert to fraction form
    5,674.15/7,830.28 = 3,156.49/x
  3. Step 3: Cross multiply
    5,674.15x = 7,830.28 × 3,156.49
  4. Step 4: Simplify right side
    5,674.15x = 24,716,200.52
  5. Step 5: Solve for x
    x = 24,716,200.52/5,674.15
  6. Step 6: Final answer
    x = 4,355.93

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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.