Home / 10,272.80-15,409.20-2,877.50

Finding the Fourth Proportional to 10,272.80, 15,409.20 and 2,877.50

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Solution

The fourth proportional to 10,272.80, 15,409.20 and 2,877.50 is: 4,316.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,272.80 : 15,409.20 = 2,877.50 : x
  2. Step 2: Convert to fraction form
    10,272.80/15,409.20 = 2,877.50/x
  3. Step 3: Cross multiply
    10,272.80x = 15,409.20 × 2,877.50
  4. Step 4: Simplify right side
    10,272.80x = 44,339,973
  5. Step 5: Solve for x
    x = 44,339,973/10,272.80
  6. Step 6: Final answer
    x = 4,316.25

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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.