Home / 1,821.39-2,513.28-1,158.39

Finding the Fourth Proportional to 1,821.39, 2,513.28 and 1,158.39

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Solution

The fourth proportional to 1,821.39, 2,513.28 and 1,158.39 is: 1,598.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,821.39 : 2,513.28 = 1,158.39 : x
  2. Step 2: Convert to fraction form
    1,821.39/2,513.28 = 1,158.39/x
  3. Step 3: Cross multiply
    1,821.39x = 2,513.28 × 1,158.39
  4. Step 4: Simplify right side
    1,821.39x = 2,911,358.42
  5. Step 5: Solve for x
    x = 2,911,358.42/1,821.39
  6. Step 6: Final answer
    x = 1,598.43

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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.