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Finding the Fourth Proportional to 2,521.04, 3,780.32 and 765.74

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Solution

The fourth proportional to 2,521.04, 3,780.32 and 765.74 is: 1,148.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,521.04 : 3,780.32 = 765.74 : x
  2. Step 2: Convert to fraction form
    2,521.04/3,780.32 = 765.74/x
  3. Step 3: Cross multiply
    2,521.04x = 3,780.32 × 765.74
  4. Step 4: Simplify right side
    2,521.04x = 2,894,742.24
  5. Step 5: Solve for x
    x = 2,894,742.24/2,521.04
  6. Step 6: Final answer
    x = 1,148.23

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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.