Home / 1,587.63-2,190.92-889.00

Finding the Fourth Proportional to 1,587.63, 2,190.92 and 889.00

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Solution

The fourth proportional to 1,587.63, 2,190.92 and 889.00 is: 1,226.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,587.63 : 2,190.92 = 889.00 : x
  2. Step 2: Convert to fraction form
    1,587.63/2,190.92 = 889.00/x
  3. Step 3: Cross multiply
    1,587.63x = 2,190.92 × 889.00
  4. Step 4: Simplify right side
    1,587.63x = 1,947,724.12
  5. Step 5: Solve for x
    x = 1,947,724.12/1,587.63
  6. Step 6: Final answer
    x = 1,226.82

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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.