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Finding the Fourth Proportional to 3,159.06, 4,358.99 and 1,899.81

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Solution

The fourth proportional to 3,159.06, 4,358.99 and 1,899.81 is: 2,621.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,159.06 : 4,358.99 = 1,899.81 : x
  2. Step 2: Convert to fraction form
    3,159.06/4,358.99 = 1,899.81/x
  3. Step 3: Cross multiply
    3,159.06x = 4,358.99 × 1,899.81
  4. Step 4: Simplify right side
    3,159.06x = 8,281,252.79
  5. Step 5: Solve for x
    x = 8,281,252.79/3,159.06
  6. Step 6: Final answer
    x = 2,621.43

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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.