Home / 1,539.30-2,124.36-876.36

Finding the Fourth Proportional to 1,539.30, 2,124.36 and 876.36

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Solution

The fourth proportional to 1,539.30, 2,124.36 and 876.36 is: 1,209.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,539.30 : 2,124.36 = 876.36 : x
  2. Step 2: Convert to fraction form
    1,539.30/2,124.36 = 876.36/x
  3. Step 3: Cross multiply
    1,539.30x = 2,124.36 × 876.36
  4. Step 4: Simplify right side
    1,539.30x = 1,861,704.13
  5. Step 5: Solve for x
    x = 1,861,704.13/1,539.30
  6. Step 6: Final answer
    x = 1,209.45

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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.