Home / 1,685.56-2,325.03-1,087.87

Finding the Fourth Proportional to 1,685.56, 2,325.03 and 1,087.87

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Solution

The fourth proportional to 1,685.56, 2,325.03 and 1,087.87 is: 1,500.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,685.56 : 2,325.03 = 1,087.87 : x
  2. Step 2: Convert to fraction form
    1,685.56/2,325.03 = 1,087.87/x
  3. Step 3: Cross multiply
    1,685.56x = 2,325.03 × 1,087.87
  4. Step 4: Simplify right side
    1,685.56x = 2,529,330.39
  5. Step 5: Solve for x
    x = 2,529,330.39/1,685.56
  6. Step 6: Final answer
    x = 1,500.59

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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.