Home / 1,788.79-2,455.36-1,587.91

Finding the Fourth Proportional to 1,788.79, 2,455.36 and 1,587.91

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Solution

The fourth proportional to 1,788.79, 2,455.36 and 1,587.91 is: 2,179.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,788.79 : 2,455.36 = 1,587.91 : x
  2. Step 2: Convert to fraction form
    1,788.79/2,455.36 = 1,587.91/x
  3. Step 3: Cross multiply
    1,788.79x = 2,455.36 × 1,587.91
  4. Step 4: Simplify right side
    1,788.79x = 3,898,872.47
  5. Step 5: Solve for x
    x = 3,898,872.47/1,788.79
  6. Step 6: Final answer
    x = 2,179.62

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.