Home / 1,785.40-2,463.90-999.47

Finding the Fourth Proportional to 1,785.40, 2,463.90 and 999.47

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Solution

The fourth proportional to 1,785.40, 2,463.90 and 999.47 is: 1,379.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,785.40 : 2,463.90 = 999.47 : x
  2. Step 2: Convert to fraction form
    1,785.40/2,463.90 = 999.47/x
  3. Step 3: Cross multiply
    1,785.40x = 2,463.90 × 999.47
  4. Step 4: Simplify right side
    1,785.40x = 2,462,594.13
  5. Step 5: Solve for x
    x = 2,462,594.13/1,785.40
  6. Step 6: Final answer
    x = 1,379.30

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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.