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Finding the Fourth Proportional to 2,591.44, 3,888.44 and 1,130.38

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Solution

The fourth proportional to 2,591.44, 3,888.44 and 1,130.38 is: 1,696.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,591.44 : 3,888.44 = 1,130.38 : x
  2. Step 2: Convert to fraction form
    2,591.44/3,888.44 = 1,130.38/x
  3. Step 3: Cross multiply
    2,591.44x = 3,888.44 × 1,130.38
  4. Step 4: Simplify right side
    2,591.44x = 4,395,414.81
  5. Step 5: Solve for x
    x = 4,395,414.81/2,591.44
  6. Step 6: Final answer
    x = 1,696.13

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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.