Home / 1,872.64-2,583.84-1,086.40

Finding the Fourth Proportional to 1,872.64, 2,583.84 and 1,086.40

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Solution

The fourth proportional to 1,872.64, 2,583.84 and 1,086.40 is: 1,499.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,872.64 : 2,583.84 = 1,086.40 : x
  2. Step 2: Convert to fraction form
    1,872.64/2,583.84 = 1,086.40/x
  3. Step 3: Cross multiply
    1,872.64x = 2,583.84 × 1,086.40
  4. Step 4: Simplify right side
    1,872.64x = 2,807,083.78
  5. Step 5: Solve for x
    x = 2,807,083.78/1,872.64
  6. Step 6: Final answer
    x = 1,499.00

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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.