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Finding the Fourth Proportional to 2,225.93, 3,339.51 and 765.20

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Solution

The fourth proportional to 2,225.93, 3,339.51 and 765.20 is: 1,148.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,225.93 : 3,339.51 = 765.20 : x
  2. Step 2: Convert to fraction form
    2,225.93/3,339.51 = 765.20/x
  3. Step 3: Cross multiply
    2,225.93x = 3,339.51 × 765.20
  4. Step 4: Simplify right side
    2,225.93x = 2,555,401.40
  5. Step 5: Solve for x
    x = 2,555,401.40/2,225.93
  6. Step 6: Final answer
    x = 1,148.01

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1.5x scale

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.