Home / 1,913.34-2,639.79-1,116.30

Finding the Fourth Proportional to 1,913.34, 2,639.79 and 1,116.30

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Solution

The fourth proportional to 1,913.34, 2,639.79 and 1,116.30 is: 1,540.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,913.34 : 2,639.79 = 1,116.30 : x
  2. Step 2: Convert to fraction form
    1,913.34/2,639.79 = 1,116.30/x
  3. Step 3: Cross multiply
    1,913.34x = 2,639.79 × 1,116.30
  4. Step 4: Simplify right side
    1,913.34x = 2,946,797.58
  5. Step 5: Solve for x
    x = 2,946,797.58/1,913.34
  6. Step 6: Final answer
    x = 1,540.13

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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.