Home / 3,127.50-4,315.50-2,657.28

Finding the Fourth Proportional to 3,127.50, 4,315.50 and 2,657.28

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Solution

The fourth proportional to 3,127.50, 4,315.50 and 2,657.28 is: 3,666.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,127.50 : 4,315.50 = 2,657.28 : x
  2. Step 2: Convert to fraction form
    3,127.50/4,315.50 = 2,657.28/x
  3. Step 3: Cross multiply
    3,127.50x = 4,315.50 × 2,657.28
  4. Step 4: Simplify right side
    3,127.50x = 11,467,491.84
  5. Step 5: Solve for x
    x = 11,467,491.84/3,127.50
  6. Step 6: Final answer
    x = 3,666.66

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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.