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Finding the Fourth Proportional to 1,622.02, 2,238.25 and 913.64

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Solution

The fourth proportional to 1,622.02, 2,238.25 and 913.64 is: 1,260.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,622.02 : 2,238.25 = 913.64 : x
  2. Step 2: Convert to fraction form
    1,622.02/2,238.25 = 913.64/x
  3. Step 3: Cross multiply
    1,622.02x = 2,238.25 × 913.64
  4. Step 4: Simplify right side
    1,622.02x = 2,044,951.99
  5. Step 5: Solve for x
    x = 2,044,951.99/1,622.02
  6. Step 6: Final answer
    x = 1,260.74

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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.