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Finding the Fourth Proportional to 1,532.42, 2,114.64 and 851.01

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Solution

The fourth proportional to 1,532.42, 2,114.64 and 851.01 is: 1,174.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,532.42 : 2,114.64 = 851.01 : x
  2. Step 2: Convert to fraction form
    1,532.42/2,114.64 = 851.01/x
  3. Step 3: Cross multiply
    1,532.42x = 2,114.64 × 851.01
  4. Step 4: Simplify right side
    1,532.42x = 1,799,571.86
  5. Step 5: Solve for x
    x = 1,799,571.86/1,532.42
  6. Step 6: Final answer
    x = 1,174.33

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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.