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Finding the Fourth Proportional to 3,802.84, 5,247.84 and 2,124.20

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Solution

The fourth proportional to 3,802.84, 5,247.84 and 2,124.20 is: 2,931.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,802.84 : 5,247.84 = 2,124.20 : x
  2. Step 2: Convert to fraction form
    3,802.84/5,247.84 = 2,124.20/x
  3. Step 3: Cross multiply
    3,802.84x = 5,247.84 × 2,124.20
  4. Step 4: Simplify right side
    3,802.84x = 11,147,461.73
  5. Step 5: Solve for x
    x = 11,147,461.73/3,802.84
  6. Step 6: Final answer
    x = 2,931.35

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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.