Home / 4,188.81-5,781.27-2,421.50

Finding the Fourth Proportional to 4,188.81, 5,781.27 and 2,421.50

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Solution

The fourth proportional to 4,188.81, 5,781.27 and 2,421.50 is: 3,342.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,188.81 : 5,781.27 = 2,421.50 : x
  2. Step 2: Convert to fraction form
    4,188.81/5,781.27 = 2,421.50/x
  3. Step 3: Cross multiply
    4,188.81x = 5,781.27 × 2,421.50
  4. Step 4: Simplify right side
    4,188.81x = 13,999,325.48
  5. Step 5: Solve for x
    x = 13,999,325.48/4,188.81
  6. Step 6: Final answer
    x = 3,342.07

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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.