Home / 1,653.24-2,281.32-989.96

Finding the Fourth Proportional to 1,653.24, 2,281.32 and 989.96

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Solution

The fourth proportional to 1,653.24, 2,281.32 and 989.96 is: 1,366.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,653.24 : 2,281.32 = 989.96 : x
  2. Step 2: Convert to fraction form
    1,653.24/2,281.32 = 989.96/x
  3. Step 3: Cross multiply
    1,653.24x = 2,281.32 × 989.96
  4. Step 4: Simplify right side
    1,653.24x = 2,258,415.55
  5. Step 5: Solve for x
    x = 2,258,415.55/1,653.24
  6. Step 6: Final answer
    x = 1,366.05

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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.