Home / 8,816.60-12,160.56-5,669.72

Finding the Fourth Proportional to 8,816.60, 12,160.56 and 5,669.72

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Solution

The fourth proportional to 8,816.60, 12,160.56 and 5,669.72 is: 7,820.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,816.60 : 12,160.56 = 5,669.72 : x
  2. Step 2: Convert to fraction form
    8,816.60/12,160.56 = 5,669.72/x
  3. Step 3: Cross multiply
    8,816.60x = 12,160.56 × 5,669.72
  4. Step 4: Simplify right side
    8,816.60x = 68,946,970.24
  5. Step 5: Solve for x
    x = 68,946,970.24/8,816.60
  6. Step 6: Final answer
    x = 7,820.13

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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.