Home / 3,503.81-5,255.85-1,312.31

Finding the Fourth Proportional to 3,503.81, 5,255.85 and 1,312.31

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Solution

The fourth proportional to 3,503.81, 5,255.85 and 1,312.31 is: 1,968.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,503.81 : 5,255.85 = 1,312.31 : x
  2. Step 2: Convert to fraction form
    3,503.81/5,255.85 = 1,312.31/x
  3. Step 3: Cross multiply
    3,503.81x = 5,255.85 × 1,312.31
  4. Step 4: Simplify right side
    3,503.81x = 6,897,304.51
  5. Step 5: Solve for x
    x = 6,897,304.51/3,503.81
  6. Step 6: Final answer
    x = 1,968.52

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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.