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Finding the Fourth Proportional to 1,512.84, 2,087.65 and 883.40

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Solution

The fourth proportional to 1,512.84, 2,087.65 and 883.40 is: 1,219.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,512.84 : 2,087.65 = 883.40 : x
  2. Step 2: Convert to fraction form
    1,512.84/2,087.65 = 883.40/x
  3. Step 3: Cross multiply
    1,512.84x = 2,087.65 × 883.40
  4. Step 4: Simplify right side
    1,512.84x = 1,844,230.01
  5. Step 5: Solve for x
    x = 1,844,230.01/1,512.84
  6. Step 6: Final answer
    x = 1,219.05

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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.