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Finding the Fourth Proportional to 1,544.05, 2,130.99 and 881.03

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Solution

The fourth proportional to 1,544.05, 2,130.99 and 881.03 is: 1,215.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,544.05 : 2,130.99 = 881.03 : x
  2. Step 2: Convert to fraction form
    1,544.05/2,130.99 = 881.03/x
  3. Step 3: Cross multiply
    1,544.05x = 2,130.99 × 881.03
  4. Step 4: Simplify right side
    1,544.05x = 1,877,473.10
  5. Step 5: Solve for x
    x = 1,877,473.10/1,544.05
  6. Step 6: Final answer
    x = 1,215.94

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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.