Home / 1,434.28-2,139.65-1,219.24

Finding the Fourth Proportional to 1,434.28, 2,139.65 and 1,219.24

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Solution

The fourth proportional to 1,434.28, 2,139.65 and 1,219.24 is: 1,818.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,434.28 : 2,139.65 = 1,219.24 : x
  2. Step 2: Convert to fraction form
    1,434.28/2,139.65 = 1,219.24/x
  3. Step 3: Cross multiply
    1,434.28x = 2,139.65 × 1,219.24
  4. Step 4: Simplify right side
    1,434.28x = 2,608,746.87
  5. Step 5: Solve for x
    x = 2,608,746.87/1,434.28
  6. Step 6: Final answer
    x = 1,818.85

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.