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Finding the Fourth Proportional to 3,392.79, 4,681.99 and 1,900.70

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Solution

The fourth proportional to 3,392.79, 4,681.99 and 1,900.70 is: 2,622.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,392.79 : 4,681.99 = 1,900.70 : x
  2. Step 2: Convert to fraction form
    3,392.79/4,681.99 = 1,900.70/x
  3. Step 3: Cross multiply
    3,392.79x = 4,681.99 × 1,900.70
  4. Step 4: Simplify right side
    3,392.79x = 8,899,080.01
  5. Step 5: Solve for x
    x = 8,899,080.01/3,392.79
  6. Step 6: Final answer
    x = 2,622.94

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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.