Home / 2,890.33-3,988.64-1,564.03

Finding the Fourth Proportional to 2,890.33, 3,988.64 and 1,564.03

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Solution

The fourth proportional to 2,890.33, 3,988.64 and 1,564.03 is: 2,158.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,890.33 : 3,988.64 = 1,564.03 : x
  2. Step 2: Convert to fraction form
    2,890.33/3,988.64 = 1,564.03/x
  3. Step 3: Cross multiply
    2,890.33x = 3,988.64 × 1,564.03
  4. Step 4: Simplify right side
    2,890.33x = 6,238,346.56
  5. Step 5: Solve for x
    x = 6,238,346.56/2,890.33
  6. Step 6: Final answer
    x = 2,158.35

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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.