Home / 3,899.15-5,382.60-2,484.78

Finding the Fourth Proportional to 3,899.15, 5,382.60 and 2,484.78

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Solution

The fourth proportional to 3,899.15, 5,382.60 and 2,484.78 is: 3,430.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,899.15 : 5,382.60 = 2,484.78 : x
  2. Step 2: Convert to fraction form
    3,899.15/5,382.60 = 2,484.78/x
  3. Step 3: Cross multiply
    3,899.15x = 5,382.60 × 2,484.78
  4. Step 4: Simplify right side
    3,899.15x = 13,374,576.83
  5. Step 5: Solve for x
    x = 13,374,576.83/3,899.15
  6. Step 6: Final answer
    x = 3,430.13

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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.