Home / 1,539.20-2,124.23-875.91

Finding the Fourth Proportional to 1,539.20, 2,124.23 and 875.91

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Solution

The fourth proportional to 1,539.20, 2,124.23 and 875.91 is: 1,208.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,539.20 : 2,124.23 = 875.91 : x
  2. Step 2: Convert to fraction form
    1,539.20/2,124.23 = 875.91/x
  3. Step 3: Cross multiply
    1,539.20x = 2,124.23 × 875.91
  4. Step 4: Simplify right side
    1,539.20x = 1,860,634.30
  5. Step 5: Solve for x
    x = 1,860,634.30/1,539.20
  6. Step 6: Final answer
    x = 1,208.83

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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.