Home / 1,320.30-1,820.07-1,084.59

Finding the Fourth Proportional to 1,320.30, 1,820.07 and 1,084.59

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Solution

The fourth proportional to 1,320.30, 1,820.07 and 1,084.59 is: 1,495.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320.30 : 1,820.07 = 1,084.59 : x
  2. Step 2: Convert to fraction form
    1,320.30/1,820.07 = 1,084.59/x
  3. Step 3: Cross multiply
    1,320.30x = 1,820.07 × 1,084.59
  4. Step 4: Simplify right side
    1,320.30x = 1,974,029.72
  5. Step 5: Solve for x
    x = 1,974,029.72/1,320.30
  6. Step 6: Final answer
    x = 1,495.14

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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.