Home / 1,730.84-2,387.68-1,311.26

Finding the Fourth Proportional to 1,730.84, 2,387.68 and 1,311.26

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Solution

The fourth proportional to 1,730.84, 2,387.68 and 1,311.26 is: 1,808.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,730.84 : 2,387.68 = 1,311.26 : x
  2. Step 2: Convert to fraction form
    1,730.84/2,387.68 = 1,311.26/x
  3. Step 3: Cross multiply
    1,730.84x = 2,387.68 × 1,311.26
  4. Step 4: Simplify right side
    1,730.84x = 3,130,854.06
  5. Step 5: Solve for x
    x = 3,130,854.06/1,730.84
  6. Step 6: Final answer
    x = 1,808.87

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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.