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Finding the Fourth Proportional to 1,622.76, 2,239.28 and 993.03

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Solution

The fourth proportional to 1,622.76, 2,239.28 and 993.03 is: 1,370.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,622.76 : 2,239.28 = 993.03 : x
  2. Step 2: Convert to fraction form
    1,622.76/2,239.28 = 993.03/x
  3. Step 3: Cross multiply
    1,622.76x = 2,239.28 × 993.03
  4. Step 4: Simplify right side
    1,622.76x = 2,223,666.30
  5. Step 5: Solve for x
    x = 2,223,666.30/1,622.76
  6. Step 6: Final answer
    x = 1,370.30

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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.