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Finding the Fourth Proportional to 1,325.28, 1,828.86 and 735.80

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Solution

The fourth proportional to 1,325.28, 1,828.86 and 735.80 is: 1,015.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,325.28 : 1,828.86 = 735.80 : x
  2. Step 2: Convert to fraction form
    1,325.28/1,828.86 = 735.80/x
  3. Step 3: Cross multiply
    1,325.28x = 1,828.86 × 735.80
  4. Step 4: Simplify right side
    1,325.28x = 1,345,666.04
  5. Step 5: Solve for x
    x = 1,345,666.04/1,325.28
  6. Step 6: Final answer
    x = 1,015.38

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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.