Home / 3,918.14-5,406.93-2,125.52

Finding the Fourth Proportional to 3,918.14, 5,406.93 and 2,125.52

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Solution

The fourth proportional to 3,918.14, 5,406.93 and 2,125.52 is: 2,933.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,918.14 : 5,406.93 = 2,125.52 : x
  2. Step 2: Convert to fraction form
    3,918.14/5,406.93 = 2,125.52/x
  3. Step 3: Cross multiply
    3,918.14x = 5,406.93 × 2,125.52
  4. Step 4: Simplify right side
    3,918.14x = 11,492,510.82
  5. Step 5: Solve for x
    x = 11,492,510.82/3,918.14
  6. Step 6: Final answer
    x = 2,933.16

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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.