Home / 3,916.80-5,403.84-2,238.24

Finding the Fourth Proportional to 3,916.80, 5,403.84 and 2,238.24

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Solution

The fourth proportional to 3,916.80, 5,403.84 and 2,238.24 is: 3,088.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,916.80 : 5,403.84 = 2,238.24 : x
  2. Step 2: Convert to fraction form
    3,916.80/5,403.84 = 2,238.24/x
  3. Step 3: Cross multiply
    3,916.80x = 5,403.84 × 2,238.24
  4. Step 4: Simplify right side
    3,916.80x = 12,095,090.84
  5. Step 5: Solve for x
    x = 12,095,090.84/3,916.80
  6. Step 6: Final answer
    x = 3,088.00

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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.