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Finding the Fourth Proportional to 3,479.87, 4,802.88 and 2,154.17

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Solution

The fourth proportional to 3,479.87, 4,802.88 and 2,154.17 is: 2,973.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,479.87 : 4,802.88 = 2,154.17 : x
  2. Step 2: Convert to fraction form
    3,479.87/4,802.88 = 2,154.17/x
  3. Step 3: Cross multiply
    3,479.87x = 4,802.88 × 2,154.17
  4. Step 4: Simplify right side
    3,479.87x = 10,346,196.00
  5. Step 5: Solve for x
    x = 10,346,196.00/3,479.87
  6. Step 6: Final answer
    x = 2,973.16

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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.