Home / 1,720.46-2,586.36-1,398.08

Finding the Fourth Proportional to 1,720.46, 2,586.36 and 1,398.08

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Solution

The fourth proportional to 1,720.46, 2,586.36 and 1,398.08 is: 2,101.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,720.46 : 2,586.36 = 1,398.08 : x
  2. Step 2: Convert to fraction form
    1,720.46/2,586.36 = 1,398.08/x
  3. Step 3: Cross multiply
    1,720.46x = 2,586.36 × 1,398.08
  4. Step 4: Simplify right side
    1,720.46x = 3,615,938.19
  5. Step 5: Solve for x
    x = 3,615,938.19/1,720.46
  6. Step 6: Final answer
    x = 2,101.73

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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.