Home / 5,318.84-7,977.64-1,423.56

Finding the Fourth Proportional to 5,318.84, 7,977.64 and 1,423.56

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Solution

The fourth proportional to 5,318.84, 7,977.64 and 1,423.56 is: 2,135.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,318.84 : 7,977.64 = 1,423.56 : x
  2. Step 2: Convert to fraction form
    5,318.84/7,977.64 = 1,423.56/x
  3. Step 3: Cross multiply
    5,318.84x = 7,977.64 × 1,423.56
  4. Step 4: Simplify right side
    5,318.84x = 11,356,649.20
  5. Step 5: Solve for x
    x = 11,356,649.20/5,318.84
  6. Step 6: Final answer
    x = 2,135.17

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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.