Home / 3,903.19-5,386.40-2,134.79

Finding the Fourth Proportional to 3,903.19, 5,386.40 and 2,134.79

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Solution

The fourth proportional to 3,903.19, 5,386.40 and 2,134.79 is: 2,946.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,903.19 : 5,386.40 = 2,134.79 : x
  2. Step 2: Convert to fraction form
    3,903.19/5,386.40 = 2,134.79/x
  3. Step 3: Cross multiply
    3,903.19x = 5,386.40 × 2,134.79
  4. Step 4: Simplify right side
    3,903.19x = 11,498,823.45
  5. Step 5: Solve for x
    x = 11,498,823.45/3,903.19
  6. Step 6: Final answer
    x = 2,946.01

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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.