Home / 5,108.85-7,050.65-2,871.09

Finding the Fourth Proportional to 5,108.85, 7,050.65 and 2,871.09

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Solution

The fourth proportional to 5,108.85, 7,050.65 and 2,871.09 is: 3,962.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,108.85 : 7,050.65 = 2,871.09 : x
  2. Step 2: Convert to fraction form
    5,108.85/7,050.65 = 2,871.09/x
  3. Step 3: Cross multiply
    5,108.85x = 7,050.65 × 2,871.09
  4. Step 4: Simplify right side
    5,108.85x = 20,243,036.35
  5. Step 5: Solve for x
    x = 20,243,036.35/5,108.85
  6. Step 6: Final answer
    x = 3,962.35

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1.5x scale

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.