Home / 2,419.36-3,629.04-1,931.76

Finding the Fourth Proportional to 2,419.36, 3,629.04 and 1,931.76

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Solution

The fourth proportional to 2,419.36, 3,629.04 and 1,931.76 is: 2,897.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,419.36 : 3,629.04 = 1,931.76 : x
  2. Step 2: Convert to fraction form
    2,419.36/3,629.04 = 1,931.76/x
  3. Step 3: Cross multiply
    2,419.36x = 3,629.04 × 1,931.76
  4. Step 4: Simplify right side
    2,419.36x = 7,010,434.31
  5. Step 5: Solve for x
    x = 7,010,434.31/2,419.36
  6. Step 6: Final answer
    x = 2,897.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.