Home / 4,188.87-5,781.68-2,421.50

Finding the Fourth Proportional to 4,188.87, 5,781.68 and 2,421.50

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Solution

The fourth proportional to 4,188.87, 5,781.68 and 2,421.50 is: 3,342.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,188.87 : 5,781.68 = 2,421.50 : x
  2. Step 2: Convert to fraction form
    4,188.87/5,781.68 = 2,421.50/x
  3. Step 3: Cross multiply
    4,188.87x = 5,781.68 × 2,421.50
  4. Step 4: Simplify right side
    4,188.87x = 14,000,297.10
  5. Step 5: Solve for x
    x = 14,000,297.10/4,188.87
  6. Step 6: Final answer
    x = 3,342.26

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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.