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Finding the Fourth Proportional to 1,551.51, 2,141.24 and 888.59

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Solution

The fourth proportional to 1,551.51, 2,141.24 and 888.59 is: 1,226.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,551.51 : 2,141.24 = 888.59 : x
  2. Step 2: Convert to fraction form
    1,551.51/2,141.24 = 888.59/x
  3. Step 3: Cross multiply
    1,551.51x = 2,141.24 × 888.59
  4. Step 4: Simplify right side
    1,551.51x = 1,902,685.36
  5. Step 5: Solve for x
    x = 1,902,685.36/1,551.51
  6. Step 6: Final answer
    x = 1,226.34

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1.5x scale

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.