Home / 3,172.84-4,378.53-1,756.63

Finding the Fourth Proportional to 3,172.84, 4,378.53 and 1,756.63

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Solution

The fourth proportional to 3,172.84, 4,378.53 and 1,756.63 is: 2,424.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,172.84 : 4,378.53 = 1,756.63 : x
  2. Step 2: Convert to fraction form
    3,172.84/4,378.53 = 1,756.63/x
  3. Step 3: Cross multiply
    3,172.84x = 4,378.53 × 1,756.63
  4. Step 4: Simplify right side
    3,172.84x = 7,691,426.48
  5. Step 5: Solve for x
    x = 7,691,426.48/3,172.84
  6. Step 6: Final answer
    x = 2,424.15

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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.