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Finding the Fourth Proportional to 3,515.70, 4,851.30 and 1,943.70

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Solution

The fourth proportional to 3,515.70, 4,851.30 and 1,943.70 is: 2,682.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,515.70 : 4,851.30 = 1,943.70 : x
  2. Step 2: Convert to fraction form
    3,515.70/4,851.30 = 1,943.70/x
  3. Step 3: Cross multiply
    3,515.70x = 4,851.30 × 1,943.70
  4. Step 4: Simplify right side
    3,515.70x = 9,429,471.81
  5. Step 5: Solve for x
    x = 9,429,471.81/3,515.70
  6. Step 6: Final answer
    x = 2,682.10

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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.