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Finding the Fourth Proportional to 1,752.50, 2,628.75 and 983.06

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Solution

The fourth proportional to 1,752.50, 2,628.75 and 983.06 is: 1,474.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,752.50 : 2,628.75 = 983.06 : x
  2. Step 2: Convert to fraction form
    1,752.50/2,628.75 = 983.06/x
  3. Step 3: Cross multiply
    1,752.50x = 2,628.75 × 983.06
  4. Step 4: Simplify right side
    1,752.50x = 2,584,218.98
  5. Step 5: Solve for x
    x = 2,584,218.98/1,752.50
  6. Step 6: Final answer
    x = 1,474.59

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.