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Finding the Fourth Proportional to 3,445.64, 4,755 and 1,873.76

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Solution

The fourth proportional to 3,445.64, 4,755 and 1,873.76 is: 2,585.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,445.64 : 4,755 = 1,873.76 : x
  2. Step 2: Convert to fraction form
    3,445.64/4,755 = 1,873.76/x
  3. Step 3: Cross multiply
    3,445.64x = 4,755 × 1,873.76
  4. Step 4: Simplify right side
    3,445.64x = 8,909,728.80
  5. Step 5: Solve for x
    x = 8,909,728.80/3,445.64
  6. Step 6: Final answer
    x = 2,585.80

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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.