Home / 3,688.61-5,086.40-3,159.24

Finding the Fourth Proportional to 3,688.61, 5,086.40 and 3,159.24

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Solution

The fourth proportional to 3,688.61, 5,086.40 and 3,159.24 is: 4,356.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,688.61 : 5,086.40 = 3,159.24 : x
  2. Step 2: Convert to fraction form
    3,688.61/5,086.40 = 3,159.24/x
  3. Step 3: Cross multiply
    3,688.61x = 5,086.40 × 3,159.24
  4. Step 4: Simplify right side
    3,688.61x = 16,069,142.54
  5. Step 5: Solve for x
    x = 16,069,142.54/3,688.61
  6. Step 6: Final answer
    x = 4,356.43

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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.