Home / 1,767.31-2,438.95-1,011.21

Finding the Fourth Proportional to 1,767.31, 2,438.95 and 1,011.21

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Solution

The fourth proportional to 1,767.31, 2,438.95 and 1,011.21 is: 1,395.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,767.31 : 2,438.95 = 1,011.21 : x
  2. Step 2: Convert to fraction form
    1,767.31/2,438.95 = 1,011.21/x
  3. Step 3: Cross multiply
    1,767.31x = 2,438.95 × 1,011.21
  4. Step 4: Simplify right side
    1,767.31x = 2,466,286.29
  5. Step 5: Solve for x
    x = 2,466,286.29/1,767.31
  6. Step 6: Final answer
    x = 1,395.51

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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.