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Finding the Fourth Proportional to 1,851.54, 2,555.64 and 1,065.84

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Solution

The fourth proportional to 1,851.54, 2,555.64 and 1,065.84 is: 1,471.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,851.54 : 2,555.64 = 1,065.84 : x
  2. Step 2: Convert to fraction form
    1,851.54/2,555.64 = 1,065.84/x
  3. Step 3: Cross multiply
    1,851.54x = 2,555.64 × 1,065.84
  4. Step 4: Simplify right side
    1,851.54x = 2,723,903.34
  5. Step 5: Solve for x
    x = 2,723,903.34/1,851.54
  6. Step 6: Final answer
    x = 1,471.16

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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.