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Finding the Fourth Proportional to 2,888.55, 4,331.75 and 1,913.31

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Solution

The fourth proportional to 2,888.55, 4,331.75 and 1,913.31 is: 2,869.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,888.55 : 4,331.75 = 1,913.31 : x
  2. Step 2: Convert to fraction form
    2,888.55/4,331.75 = 1,913.31/x
  3. Step 3: Cross multiply
    2,888.55x = 4,331.75 × 1,913.31
  4. Step 4: Simplify right side
    2,888.55x = 8,287,971.03
  5. Step 5: Solve for x
    x = 8,287,971.03/2,888.55
  6. Step 6: Final answer
    x = 2,869.25

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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.