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Finding the Fourth Proportional to 1,527.63, 2,107.76 and 930.12

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Solution

The fourth proportional to 1,527.63, 2,107.76 and 930.12 is: 1,283.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,527.63 : 2,107.76 = 930.12 : x
  2. Step 2: Convert to fraction form
    1,527.63/2,107.76 = 930.12/x
  3. Step 3: Cross multiply
    1,527.63x = 2,107.76 × 930.12
  4. Step 4: Simplify right side
    1,527.63x = 1,960,469.73
  5. Step 5: Solve for x
    x = 1,960,469.73/1,527.63
  6. Step 6: Final answer
    x = 1,283.34

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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.