Home / 1,487.36-2,230.40-718.08

Finding the Fourth Proportional to 1,487.36, 2,230.40 and 718.08

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Solution

The fourth proportional to 1,487.36, 2,230.40 and 718.08 is: 1,076.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,487.36 : 2,230.40 = 718.08 : x
  2. Step 2: Convert to fraction form
    1,487.36/2,230.40 = 718.08/x
  3. Step 3: Cross multiply
    1,487.36x = 2,230.40 × 718.08
  4. Step 4: Simplify right side
    1,487.36x = 1,601,605.63
  5. Step 5: Solve for x
    x = 1,601,605.63/1,487.36
  6. Step 6: Final answer
    x = 1,076.81

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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.