Home / 1,619.34-2,429.35-508.74

Finding the Fourth Proportional to 1,619.34, 2,429.35 and 508.74

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Solution

The fourth proportional to 1,619.34, 2,429.35 and 508.74 is: 763.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,619.34 : 2,429.35 = 508.74 : x
  2. Step 2: Convert to fraction form
    1,619.34/2,429.35 = 508.74/x
  3. Step 3: Cross multiply
    1,619.34x = 2,429.35 × 508.74
  4. Step 4: Simplify right side
    1,619.34x = 1,235,907.52
  5. Step 5: Solve for x
    x = 1,235,907.52/1,619.34
  6. Step 6: Final answer
    x = 763.22

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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.