Home / 8,811.79-12,160.83-5,822.40

Finding the Fourth Proportional to 8,811.79, 12,160.83 and 5,822.40

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Solution

The fourth proportional to 8,811.79, 12,160.83 and 5,822.40 is: 8,035.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,811.79 : 12,160.83 = 5,822.40 : x
  2. Step 2: Convert to fraction form
    8,811.79/12,160.83 = 5,822.40/x
  3. Step 3: Cross multiply
    8,811.79x = 12,160.83 × 5,822.40
  4. Step 4: Simplify right side
    8,811.79x = 70,805,216.59
  5. Step 5: Solve for x
    x = 70,805,216.59/8,811.79
  6. Step 6: Final answer
    x = 8,035.28

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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.