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Finding the Fourth Proportional to 2,595.74, 3,894.26 and 840.90

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Solution

The fourth proportional to 2,595.74, 3,894.26 and 840.90 is: 1,261.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,595.74 : 3,894.26 = 840.90 : x
  2. Step 2: Convert to fraction form
    2,595.74/3,894.26 = 840.90/x
  3. Step 3: Cross multiply
    2,595.74x = 3,894.26 × 840.90
  4. Step 4: Simplify right side
    2,595.74x = 3,274,683.23
  5. Step 5: Solve for x
    x = 3,274,683.23/2,595.74
  6. Step 6: Final answer
    x = 1,261.56

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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.