Home / 1,012.50-1,519.56-579.96

Finding the Fourth Proportional to 1,012.50, 1,519.56 and 579.96

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Solution

The fourth proportional to 1,012.50, 1,519.56 and 579.96 is: 870.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,012.50 : 1,519.56 = 579.96 : x
  2. Step 2: Convert to fraction form
    1,012.50/1,519.56 = 579.96/x
  3. Step 3: Cross multiply
    1,012.50x = 1,519.56 × 579.96
  4. Step 4: Simplify right side
    1,012.50x = 881,284.02
  5. Step 5: Solve for x
    x = 881,284.02/1,012.50
  6. Step 6: Final answer
    x = 870.40

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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.