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Finding the Fourth Proportional to 1,748.49, 2,412.37 and 992.14

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Solution

The fourth proportional to 1,748.49, 2,412.37 and 992.14 is: 1,368.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,748.49 : 2,412.37 = 992.14 : x
  2. Step 2: Convert to fraction form
    1,748.49/2,412.37 = 992.14/x
  3. Step 3: Cross multiply
    1,748.49x = 2,412.37 × 992.14
  4. Step 4: Simplify right side
    1,748.49x = 2,393,409.31
  5. Step 5: Solve for x
    x = 2,393,409.31/1,748.49
  6. Step 6: Final answer
    x = 1,368.85

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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.