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Finding the Fourth Proportional to 1,283.67, 1,764.63 and 1,275.57

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Solution

The fourth proportional to 1,283.67, 1,764.63 and 1,275.57 is: 1,753.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,283.67 : 1,764.63 = 1,275.57 : x
  2. Step 2: Convert to fraction form
    1,283.67/1,764.63 = 1,275.57/x
  3. Step 3: Cross multiply
    1,283.67x = 1,764.63 × 1,275.57
  4. Step 4: Simplify right side
    1,283.67x = 2,250,909.09
  5. Step 5: Solve for x
    x = 2,250,909.09/1,283.67
  6. Step 6: Final answer
    x = 1,753.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.