Home / 3,172.90-4,378.49-1,756.57

Finding the Fourth Proportional to 3,172.90, 4,378.49 and 1,756.57

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Solution

The fourth proportional to 3,172.90, 4,378.49 and 1,756.57 is: 2,424.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,172.90 : 4,378.49 = 1,756.57 : x
  2. Step 2: Convert to fraction form
    3,172.90/4,378.49 = 1,756.57/x
  3. Step 3: Cross multiply
    3,172.90x = 4,378.49 × 1,756.57
  4. Step 4: Simplify right side
    3,172.90x = 7,691,124.18
  5. Step 5: Solve for x
    x = 7,691,124.18/3,172.90
  6. Step 6: Final answer
    x = 2,424.00

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1.5x scale

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.