Home / 1,807.35-2,712.56-1,288.62

Finding the Fourth Proportional to 1,807.35, 2,712.56 and 1,288.62

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Solution

The fourth proportional to 1,807.35, 2,712.56 and 1,288.62 is: 1,934.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,807.35 : 2,712.56 = 1,288.62 : x
  2. Step 2: Convert to fraction form
    1,807.35/2,712.56 = 1,288.62/x
  3. Step 3: Cross multiply
    1,807.35x = 2,712.56 × 1,288.62
  4. Step 4: Simplify right side
    1,807.35x = 3,495,467.31
  5. Step 5: Solve for x
    x = 3,495,467.31/1,807.35
  6. Step 6: Final answer
    x = 1,934.03

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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.