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Finding the Fourth Proportional to 1,477.84, 2,039.64 and 888.64

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Solution

The fourth proportional to 1,477.84, 2,039.64 and 888.64 is: 1,226.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,477.84 : 2,039.64 = 888.64 : x
  2. Step 2: Convert to fraction form
    1,477.84/2,039.64 = 888.64/x
  3. Step 3: Cross multiply
    1,477.84x = 2,039.64 × 888.64
  4. Step 4: Simplify right side
    1,477.84x = 1,812,505.69
  5. Step 5: Solve for x
    x = 1,812,505.69/1,477.84
  6. Step 6: Final answer
    x = 1,226.46

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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.