Home / 1,785.20-2,463.60-999.22

Finding the Fourth Proportional to 1,785.20, 2,463.60 and 999.22

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Solution

The fourth proportional to 1,785.20, 2,463.60 and 999.22 is: 1,378.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,785.20 : 2,463.60 = 999.22 : x
  2. Step 2: Convert to fraction form
    1,785.20/2,463.60 = 999.22/x
  3. Step 3: Cross multiply
    1,785.20x = 2,463.60 × 999.22
  4. Step 4: Simplify right side
    1,785.20x = 2,461,678.39
  5. Step 5: Solve for x
    x = 2,461,678.39/1,785.20
  6. Step 6: Final answer
    x = 1,378.94

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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.