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Finding the Fourth Proportional to 2,880.76, 3,971.81 and 1,884.46

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Solution

The fourth proportional to 2,880.76, 3,971.81 and 1,884.46 is: 2,598.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,880.76 : 3,971.81 = 1,884.46 : x
  2. Step 2: Convert to fraction form
    2,880.76/3,971.81 = 1,884.46/x
  3. Step 3: Cross multiply
    2,880.76x = 3,971.81 × 1,884.46
  4. Step 4: Simplify right side
    2,880.76x = 7,484,717.07
  5. Step 5: Solve for x
    x = 7,484,717.07/2,880.76
  6. Step 6: Final answer
    x = 2,598.17

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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.