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Finding the Fourth Proportional to 1,325.48, 1,986.39 and 1,000.49

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Solution

The fourth proportional to 1,325.48, 1,986.39 and 1,000.49 is: 1,499.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,325.48 : 1,986.39 = 1,000.49 : x
  2. Step 2: Convert to fraction form
    1,325.48/1,986.39 = 1,000.49/x
  3. Step 3: Cross multiply
    1,325.48x = 1,986.39 × 1,000.49
  4. Step 4: Simplify right side
    1,325.48x = 1,987,353.40
  5. Step 5: Solve for x
    x = 1,987,353.40/1,325.48
  6. Step 6: Final answer
    x = 1,499.35

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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.