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Finding the Fourth Proportional to 1,368.84, 1,884.24 and 1,193.88

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Solution

The fourth proportional to 1,368.84, 1,884.24 and 1,193.88 is: 1,643.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,368.84 : 1,884.24 = 1,193.88 : x
  2. Step 2: Convert to fraction form
    1,368.84/1,884.24 = 1,193.88/x
  3. Step 3: Cross multiply
    1,368.84x = 1,884.24 × 1,193.88
  4. Step 4: Simplify right side
    1,368.84x = 2,249,556.45
  5. Step 5: Solve for x
    x = 2,249,556.45/1,368.84
  6. Step 6: Final answer
    x = 1,643.40

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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.