Home / 3,802.80-5,247.85-2,124.21

Finding the Fourth Proportional to 3,802.80, 5,247.85 and 2,124.21

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Solution

The fourth proportional to 3,802.80, 5,247.85 and 2,124.21 is: 2,931.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,802.80 : 5,247.85 = 2,124.21 : x
  2. Step 2: Convert to fraction form
    3,802.80/5,247.85 = 2,124.21/x
  3. Step 3: Cross multiply
    3,802.80x = 5,247.85 × 2,124.21
  4. Step 4: Simplify right side
    3,802.80x = 11,147,549.41
  5. Step 5: Solve for x
    x = 11,147,549.41/3,802.80
  6. Step 6: Final answer
    x = 2,931.41

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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.