Home / 1,590.87-2,386.21-945.71

Finding the Fourth Proportional to 1,590.87, 2,386.21 and 945.71

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Solution

The fourth proportional to 1,590.87, 2,386.21 and 945.71 is: 1,418.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,590.87 : 2,386.21 = 945.71 : x
  2. Step 2: Convert to fraction form
    1,590.87/2,386.21 = 945.71/x
  3. Step 3: Cross multiply
    1,590.87x = 2,386.21 × 945.71
  4. Step 4: Simplify right side
    1,590.87x = 2,256,662.66
  5. Step 5: Solve for x
    x = 2,256,662.66/1,590.87
  6. Step 6: Final answer
    x = 1,418.51

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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.