Home / 2,913.36-4,020.31-1,587.08

Finding the Fourth Proportional to 2,913.36, 4,020.31 and 1,587.08

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Solution

The fourth proportional to 2,913.36, 4,020.31 and 1,587.08 is: 2,190.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,913.36 : 4,020.31 = 1,587.08 : x
  2. Step 2: Convert to fraction form
    2,913.36/4,020.31 = 1,587.08/x
  3. Step 3: Cross multiply
    2,913.36x = 4,020.31 × 1,587.08
  4. Step 4: Simplify right side
    2,913.36x = 6,380,529.53
  5. Step 5: Solve for x
    x = 6,380,529.53/2,913.36
  6. Step 6: Final answer
    x = 2,190.09

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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.