Home / 1,744.95-2,406.15-1,247.40

Finding the Fourth Proportional to 1,744.95, 2,406.15 and 1,247.40

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Solution

The fourth proportional to 1,744.95, 2,406.15 and 1,247.40 is: 1,720.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,744.95 : 2,406.15 = 1,247.40 : x
  2. Step 2: Convert to fraction form
    1,744.95/2,406.15 = 1,247.40/x
  3. Step 3: Cross multiply
    1,744.95x = 2,406.15 × 1,247.40
  4. Step 4: Simplify right side
    1,744.95x = 3,001,431.51
  5. Step 5: Solve for x
    x = 3,001,431.51/1,744.95
  6. Step 6: Final answer
    x = 1,720.07

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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.