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Finding the Fourth Proportional to 2,981.84, 4,471.68 and 1,133.45

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Solution

The fourth proportional to 2,981.84, 4,471.68 and 1,133.45 is: 1,699.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,981.84 : 4,471.68 = 1,133.45 : x
  2. Step 2: Convert to fraction form
    2,981.84/4,471.68 = 1,133.45/x
  3. Step 3: Cross multiply
    2,981.84x = 4,471.68 × 1,133.45
  4. Step 4: Simplify right side
    2,981.84x = 5,068,403.34
  5. Step 5: Solve for x
    x = 5,068,403.34/2,981.84
  6. Step 6: Final answer
    x = 1,699.76

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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.