Home / 3,913.90-5,871.50-1,448.72

Finding the Fourth Proportional to 3,913.90, 5,871.50 and 1,448.72

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Solution

The fourth proportional to 3,913.90, 5,871.50 and 1,448.72 is: 2,173.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,913.90 : 5,871.50 = 1,448.72 : x
  2. Step 2: Convert to fraction form
    3,913.90/5,871.50 = 1,448.72/x
  3. Step 3: Cross multiply
    3,913.90x = 5,871.50 × 1,448.72
  4. Step 4: Simplify right side
    3,913.90x = 8,506,159.48
  5. Step 5: Solve for x
    x = 8,506,159.48/3,913.90
  6. Step 6: Final answer
    x = 2,173.32

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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.