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Finding the Fourth Proportional to 2,769.48, 3,820.32 and 1,774.20

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Solution

The fourth proportional to 2,769.48, 3,820.32 and 1,774.20 is: 2,447.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,769.48 : 3,820.32 = 1,774.20 : x
  2. Step 2: Convert to fraction form
    2,769.48/3,820.32 = 1,774.20/x
  3. Step 3: Cross multiply
    2,769.48x = 3,820.32 × 1,774.20
  4. Step 4: Simplify right side
    2,769.48x = 6,778,011.74
  5. Step 5: Solve for x
    x = 6,778,011.74/2,769.48
  6. Step 6: Final answer
    x = 2,447.40

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1.5x scale

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.