Home / 5,109.48-7,051.04-2,871.40

Finding the Fourth Proportional to 5,109.48, 7,051.04 and 2,871.40

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Solution

The fourth proportional to 5,109.48, 7,051.04 and 2,871.40 is: 3,962.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,109.48 : 7,051.04 = 2,871.40 : x
  2. Step 2: Convert to fraction form
    5,109.48/7,051.04 = 2,871.40/x
  3. Step 3: Cross multiply
    5,109.48x = 7,051.04 × 2,871.40
  4. Step 4: Simplify right side
    5,109.48x = 20,246,356.26
  5. Step 5: Solve for x
    x = 20,246,356.26/5,109.48
  6. Step 6: Final answer
    x = 3,962.51

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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.