Home / 1,807.28-2,490.48-1,282.40

Finding the Fourth Proportional to 1,807.28, 2,490.48 and 1,282.40

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Solution

The fourth proportional to 1,807.28, 2,490.48 and 1,282.40 is: 1,767.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,807.28 : 2,490.48 = 1,282.40 : x
  2. Step 2: Convert to fraction form
    1,807.28/2,490.48 = 1,282.40/x
  3. Step 3: Cross multiply
    1,807.28x = 2,490.48 × 1,282.40
  4. Step 4: Simplify right side
    1,807.28x = 3,193,791.55
  5. Step 5: Solve for x
    x = 3,193,791.55/1,807.28
  6. Step 6: Final answer
    x = 1,767.18

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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.