Home / 1,903.79-2,627.28-1,117.68

Finding the Fourth Proportional to 1,903.79, 2,627.28 and 1,117.68

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Solution

The fourth proportional to 1,903.79, 2,627.28 and 1,117.68 is: 1,542.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,903.79 : 2,627.28 = 1,117.68 : x
  2. Step 2: Convert to fraction form
    1,903.79/2,627.28 = 1,117.68/x
  3. Step 3: Cross multiply
    1,903.79x = 2,627.28 × 1,117.68
  4. Step 4: Simplify right side
    1,903.79x = 2,936,458.31
  5. Step 5: Solve for x
    x = 2,936,458.31/1,903.79
  6. Step 6: Final answer
    x = 1,542.43

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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.