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Finding the Fourth Proportional to 2,817.71, 3,888.28 and 1,558.68

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Solution

The fourth proportional to 2,817.71, 3,888.28 and 1,558.68 is: 2,150.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,817.71 : 3,888.28 = 1,558.68 : x
  2. Step 2: Convert to fraction form
    2,817.71/3,888.28 = 1,558.68/x
  3. Step 3: Cross multiply
    2,817.71x = 3,888.28 × 1,558.68
  4. Step 4: Simplify right side
    2,817.71x = 6,060,606.64
  5. Step 5: Solve for x
    x = 6,060,606.64/2,817.71
  6. Step 6: Final answer
    x = 2,150.90

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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.