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Finding the Fourth Proportional to 3,953.03, 5,455.16 and 2,274.76

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Solution

The fourth proportional to 3,953.03, 5,455.16 and 2,274.76 is: 3,139.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,953.03 : 5,455.16 = 2,274.76 : x
  2. Step 2: Convert to fraction form
    3,953.03/5,455.16 = 2,274.76/x
  3. Step 3: Cross multiply
    3,953.03x = 5,455.16 × 2,274.76
  4. Step 4: Simplify right side
    3,953.03x = 12,409,168.39
  5. Step 5: Solve for x
    x = 12,409,168.39/3,953.03
  6. Step 6: Final answer
    x = 3,139.15

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Find fourth proportional to 1,976.52, 2,727.58 and 1,137.38
Half scale
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Double scale
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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.