Home / 1,659.20-2,289.68-1,038.08

Finding the Fourth Proportional to 1,659.20, 2,289.68 and 1,038.08

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Solution

The fourth proportional to 1,659.20, 2,289.68 and 1,038.08 is: 1,432.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,659.20 : 2,289.68 = 1,038.08 : x
  2. Step 2: Convert to fraction form
    1,659.20/2,289.68 = 1,038.08/x
  3. Step 3: Cross multiply
    1,659.20x = 2,289.68 × 1,038.08
  4. Step 4: Simplify right side
    1,659.20x = 2,376,871.01
  5. Step 5: Solve for x
    x = 2,376,871.01/1,659.20
  6. Step 6: Final answer
    x = 1,432.54

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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.