Home / 1,310.23-1,966.16-579.75

Finding the Fourth Proportional to 1,310.23, 1,966.16 and 579.75

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Solution

The fourth proportional to 1,310.23, 1,966.16 and 579.75 is: 869.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,310.23 : 1,966.16 = 579.75 : x
  2. Step 2: Convert to fraction form
    1,310.23/1,966.16 = 579.75/x
  3. Step 3: Cross multiply
    1,310.23x = 1,966.16 × 579.75
  4. Step 4: Simplify right side
    1,310.23x = 1,139,881.26
  5. Step 5: Solve for x
    x = 1,139,881.26/1,310.23
  6. Step 6: Final answer
    x = 869.99

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.