Home / 3,903.28-5,386.56-2,134.84

Finding the Fourth Proportional to 3,903.28, 5,386.56 and 2,134.84

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Solution

The fourth proportional to 3,903.28, 5,386.56 and 2,134.84 is: 2,946.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,903.28 : 5,386.56 = 2,134.84 : x
  2. Step 2: Convert to fraction form
    3,903.28/5,386.56 = 2,134.84/x
  3. Step 3: Cross multiply
    3,903.28x = 5,386.56 × 2,134.84
  4. Step 4: Simplify right side
    3,903.28x = 11,499,443.75
  5. Step 5: Solve for x
    x = 11,499,443.75/3,903.28
  6. Step 6: Final answer
    x = 2,946.10

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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.