Home / 1,811.17-2,498.53-1,139.79

Finding the Fourth Proportional to 1,811.17, 2,498.53 and 1,139.79

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Solution

The fourth proportional to 1,811.17, 2,498.53 and 1,139.79 is: 1,572.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,811.17 : 2,498.53 = 1,139.79 : x
  2. Step 2: Convert to fraction form
    1,811.17/2,498.53 = 1,139.79/x
  3. Step 3: Cross multiply
    1,811.17x = 2,498.53 × 1,139.79
  4. Step 4: Simplify right side
    1,811.17x = 2,847,799.51
  5. Step 5: Solve for x
    x = 2,847,799.51/1,811.17
  6. Step 6: Final answer
    x = 1,572.35

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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.