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Finding the Fourth Proportional to 3,420.64, 4,720.48 and 1,848.74

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Solution

The fourth proportional to 3,420.64, 4,720.48 and 1,848.74 is: 2,551.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,420.64 : 4,720.48 = 1,848.74 : x
  2. Step 2: Convert to fraction form
    3,420.64/4,720.48 = 1,848.74/x
  3. Step 3: Cross multiply
    3,420.64x = 4,720.48 × 1,848.74
  4. Step 4: Simplify right side
    3,420.64x = 8,726,940.20
  5. Step 5: Solve for x
    x = 8,726,940.20/3,420.64
  6. Step 6: Final answer
    x = 2,551.26

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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.