Home / 3,571.47-4,929.33-2,155.40

Finding the Fourth Proportional to 3,571.47, 4,929.33 and 2,155.40

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Solution

The fourth proportional to 3,571.47, 4,929.33 and 2,155.40 is: 2,974.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,571.47 : 4,929.33 = 2,155.40 : x
  2. Step 2: Convert to fraction form
    3,571.47/4,929.33 = 2,155.40/x
  3. Step 3: Cross multiply
    3,571.47x = 4,929.33 × 2,155.40
  4. Step 4: Simplify right side
    3,571.47x = 10,624,653.24
  5. Step 5: Solve for x
    x = 10,624,653.24/3,571.47
  6. Step 6: Final answer
    x = 2,974.87

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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.