Home / 5,159.16-7,736.88-1,871.40

Finding the Fourth Proportional to 5,159.16, 7,736.88 and 1,871.40

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Solution

The fourth proportional to 5,159.16, 7,736.88 and 1,871.40 is: 2,806.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,159.16 : 7,736.88 = 1,871.40 : x
  2. Step 2: Convert to fraction form
    5,159.16/7,736.88 = 1,871.40/x
  3. Step 3: Cross multiply
    5,159.16x = 7,736.88 × 1,871.40
  4. Step 4: Simplify right side
    5,159.16x = 14,478,797.23
  5. Step 5: Solve for x
    x = 14,478,797.23/5,159.16
  6. Step 6: Final answer
    x = 2,806.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.