Home / 1,125.19-1,690.01-1,076.59

Finding the Fourth Proportional to 1,125.19, 1,690.01 and 1,076.59

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Solution

The fourth proportional to 1,125.19, 1,690.01 and 1,076.59 is: 1,617.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,125.19 : 1,690.01 = 1,076.59 : x
  2. Step 2: Convert to fraction form
    1,125.19/1,690.01 = 1,076.59/x
  3. Step 3: Cross multiply
    1,125.19x = 1,690.01 × 1,076.59
  4. Step 4: Simplify right side
    1,125.19x = 1,819,454.69
  5. Step 5: Solve for x
    x = 1,819,454.69/1,125.19
  6. Step 6: Final answer
    x = 1,617.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.