Home / 1,659.28-2,289.90-913.32

Finding the Fourth Proportional to 1,659.28, 2,289.90 and 913.32

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Solution

The fourth proportional to 1,659.28, 2,289.90 and 913.32 is: 1,260.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,659.28 : 2,289.90 = 913.32 : x
  2. Step 2: Convert to fraction form
    1,659.28/2,289.90 = 913.32/x
  3. Step 3: Cross multiply
    1,659.28x = 2,289.90 × 913.32
  4. Step 4: Simplify right side
    1,659.28x = 2,091,411.47
  5. Step 5: Solve for x
    x = 2,091,411.47/1,659.28
  6. Step 6: Final answer
    x = 1,260.43

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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.