Home / 7,708.08-10,637.12-4,171.28

Finding the Fourth Proportional to 7,708.08, 10,637.12 and 4,171.28

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Solution

The fourth proportional to 7,708.08, 10,637.12 and 4,171.28 is: 5,756.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,708.08 : 10,637.12 = 4,171.28 : x
  2. Step 2: Convert to fraction form
    7,708.08/10,637.12 = 4,171.28/x
  3. Step 3: Cross multiply
    7,708.08x = 10,637.12 × 4,171.28
  4. Step 4: Simplify right side
    7,708.08x = 44,370,405.91
  5. Step 5: Solve for x
    x = 44,370,405.91/7,708.08
  6. Step 6: Final answer
    x = 5,756.35

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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.