Home / 3,918.96-5,406.12-2,426.40

Finding the Fourth Proportional to 3,918.96, 5,406.12 and 2,426.40

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Solution

The fourth proportional to 3,918.96, 5,406.12 and 2,426.40 is: 3,347.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,918.96 : 5,406.12 = 2,426.40 : x
  2. Step 2: Convert to fraction form
    3,918.96/5,406.12 = 2,426.40/x
  3. Step 3: Cross multiply
    3,918.96x = 5,406.12 × 2,426.40
  4. Step 4: Simplify right side
    3,918.96x = 13,117,409.57
  5. Step 5: Solve for x
    x = 13,117,409.57/3,918.96
  6. Step 6: Final answer
    x = 3,347.17

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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.