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Finding the Fourth Proportional to 1,784.76, 2,463.02 and 998.81

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Solution

The fourth proportional to 1,784.76, 2,463.02 and 998.81 is: 1,378.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,784.76 : 2,463.02 = 998.81 : x
  2. Step 2: Convert to fraction form
    1,784.76/2,463.02 = 998.81/x
  3. Step 3: Cross multiply
    1,784.76x = 2,463.02 × 998.81
  4. Step 4: Simplify right side
    1,784.76x = 2,460,089.01
  5. Step 5: Solve for x
    x = 2,460,089.01/1,784.76
  6. Step 6: Final answer
    x = 1,378.39

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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.