Home / 8,821.64-12,176.80-7,887.46

Finding the Fourth Proportional to 8,821.64, 12,176.80 and 7,887.46

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Solution

The fourth proportional to 8,821.64, 12,176.80 and 7,887.46 is: 10,887.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,821.64 : 12,176.80 = 7,887.46 : x
  2. Step 2: Convert to fraction form
    8,821.64/12,176.80 = 7,887.46/x
  3. Step 3: Cross multiply
    8,821.64x = 12,176.80 × 7,887.46
  4. Step 4: Simplify right side
    8,821.64x = 96,044,022.93
  5. Step 5: Solve for x
    x = 96,044,022.93/8,821.64
  6. Step 6: Final answer
    x = 10,887.32

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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.