Home / 4,318.61-6,478.32-1,721.75

Finding the Fourth Proportional to 4,318.61, 6,478.32 and 1,721.75

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Solution

The fourth proportional to 4,318.61, 6,478.32 and 1,721.75 is: 2,582.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,318.61 : 6,478.32 = 1,721.75 : x
  2. Step 2: Convert to fraction form
    4,318.61/6,478.32 = 1,721.75/x
  3. Step 3: Cross multiply
    4,318.61x = 6,478.32 × 1,721.75
  4. Step 4: Simplify right side
    4,318.61x = 11,154,047.46
  5. Step 5: Solve for x
    x = 11,154,047.46/4,318.61
  6. Step 6: Final answer
    x = 2,582.79

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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.