Home / 5,871.40-8,102.69-3,218.91

Finding the Fourth Proportional to 5,871.40, 8,102.69 and 3,218.91

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Solution

The fourth proportional to 5,871.40, 8,102.69 and 3,218.91 is: 4,442.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,871.40 : 8,102.69 = 3,218.91 : x
  2. Step 2: Convert to fraction form
    5,871.40/8,102.69 = 3,218.91/x
  3. Step 3: Cross multiply
    5,871.40x = 8,102.69 × 3,218.91
  4. Step 4: Simplify right side
    5,871.40x = 26,081,829.87
  5. Step 5: Solve for x
    x = 26,081,829.87/5,871.40
  6. Step 6: Final answer
    x = 4,442.18

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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.