Home / 8,780.48-12,118.56-5,056.64

Finding the Fourth Proportional to 8,780.48, 12,118.56 and 5,056.64

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Solution

The fourth proportional to 8,780.48, 12,118.56 and 5,056.64 is: 6,979.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,780.48 : 12,118.56 = 5,056.64 : x
  2. Step 2: Convert to fraction form
    8,780.48/12,118.56 = 5,056.64/x
  3. Step 3: Cross multiply
    8,780.48x = 12,118.56 × 5,056.64
  4. Step 4: Simplify right side
    8,780.48x = 61,279,195.24
  5. Step 5: Solve for x
    x = 61,279,195.24/8,780.48
  6. Step 6: Final answer
    x = 6,979.03

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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.