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Finding the Fourth Proportional to 2,758.64, 3,804.32 and 1,812.76

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Solution

The fourth proportional to 2,758.64, 3,804.32 and 1,812.76 is: 2,499.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,758.64 : 3,804.32 = 1,812.76 : x
  2. Step 2: Convert to fraction form
    2,758.64/3,804.32 = 1,812.76/x
  3. Step 3: Cross multiply
    2,758.64x = 3,804.32 × 1,812.76
  4. Step 4: Simplify right side
    2,758.64x = 6,896,319.12
  5. Step 5: Solve for x
    x = 6,896,319.12/2,758.64
  6. Step 6: Final answer
    x = 2,499.90

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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.