Home / 2,784.38-4,176.34-1,688.46

Finding the Fourth Proportional to 2,784.38, 4,176.34 and 1,688.46

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Solution

The fourth proportional to 2,784.38, 4,176.34 and 1,688.46 is: 2,532.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,784.38 : 4,176.34 = 1,688.46 : x
  2. Step 2: Convert to fraction form
    2,784.38/4,176.34 = 1,688.46/x
  3. Step 3: Cross multiply
    2,784.38x = 4,176.34 × 1,688.46
  4. Step 4: Simplify right side
    2,784.38x = 7,051,583.04
  5. Step 5: Solve for x
    x = 7,051,583.04/2,784.38
  6. Step 6: Final answer
    x = 2,532.55

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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.