Home / 1,803.52-2,489.70-1,207.60

Finding the Fourth Proportional to 1,803.52, 2,489.70 and 1,207.60

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Solution

The fourth proportional to 1,803.52, 2,489.70 and 1,207.60 is: 1,667.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,803.52 : 2,489.70 = 1,207.60 : x
  2. Step 2: Convert to fraction form
    1,803.52/2,489.70 = 1,207.60/x
  3. Step 3: Cross multiply
    1,803.52x = 2,489.70 × 1,207.60
  4. Step 4: Simplify right side
    1,803.52x = 3,006,561.72
  5. Step 5: Solve for x
    x = 3,006,561.72/1,803.52
  6. Step 6: Final answer
    x = 1,667.05

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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.