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Finding the Fourth Proportional to 3,419.60, 4,718.74 and 1,927.40

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Solution

The fourth proportional to 3,419.60, 4,718.74 and 1,927.40 is: 2,659.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,419.60 : 4,718.74 = 1,927.40 : x
  2. Step 2: Convert to fraction form
    3,419.60/4,718.74 = 1,927.40/x
  3. Step 3: Cross multiply
    3,419.60x = 4,718.74 × 1,927.40
  4. Step 4: Simplify right side
    3,419.60x = 9,094,899.48
  5. Step 5: Solve for x
    x = 9,094,899.48/3,419.60
  6. Step 6: Final answer
    x = 2,659.64

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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.