Home / 4,188.09-5,780.66-2,420.74

Finding the Fourth Proportional to 4,188.09, 5,780.66 and 2,420.74

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Solution

The fourth proportional to 4,188.09, 5,780.66 and 2,420.74 is: 3,341.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,188.09 : 5,780.66 = 2,420.74 : x
  2. Step 2: Convert to fraction form
    4,188.09/5,780.66 = 2,420.74/x
  3. Step 3: Cross multiply
    4,188.09x = 5,780.66 × 2,420.74
  4. Step 4: Simplify right side
    4,188.09x = 13,993,474.89
  5. Step 5: Solve for x
    x = 13,993,474.89/4,188.09
  6. Step 6: Final answer
    x = 3,341.25

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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.