Home / 2,119.28-2,924.48-1,187.76

Finding the Fourth Proportional to 2,119.28, 2,924.48 and 1,187.76

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Solution

The fourth proportional to 2,119.28, 2,924.48 and 1,187.76 is: 1,639.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,119.28 : 2,924.48 = 1,187.76 : x
  2. Step 2: Convert to fraction form
    2,119.28/2,924.48 = 1,187.76/x
  3. Step 3: Cross multiply
    2,119.28x = 2,924.48 × 1,187.76
  4. Step 4: Simplify right side
    2,119.28x = 3,473,580.36
  5. Step 5: Solve for x
    x = 3,473,580.36/2,119.28
  6. Step 6: Final answer
    x = 1,639.04

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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.