Home / 1,768.24-2,655.20-1,038.40

Finding the Fourth Proportional to 1,768.24, 2,655.20 and 1,038.40

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Solution

The fourth proportional to 1,768.24, 2,655.20 and 1,038.40 is: 1,559.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,768.24 : 2,655.20 = 1,038.40 : x
  2. Step 2: Convert to fraction form
    1,768.24/2,655.20 = 1,038.40/x
  3. Step 3: Cross multiply
    1,768.24x = 2,655.20 × 1,038.40
  4. Step 4: Simplify right side
    1,768.24x = 2,757,159.68
  5. Step 5: Solve for x
    x = 2,757,159.68/1,768.24
  6. Step 6: Final answer
    x = 1,559.27

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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.