Home / 8,316.43-11,478.99-4,780.78

Finding the Fourth Proportional to 8,316.43, 11,478.99 and 4,780.78

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Solution

The fourth proportional to 8,316.43, 11,478.99 and 4,780.78 is: 6,598.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,316.43 : 11,478.99 = 4,780.78 : x
  2. Step 2: Convert to fraction form
    8,316.43/11,478.99 = 4,780.78/x
  3. Step 3: Cross multiply
    8,316.43x = 11,478.99 × 4,780.78
  4. Step 4: Simplify right side
    8,316.43x = 54,878,525.81
  5. Step 5: Solve for x
    x = 54,878,525.81/8,316.43
  6. Step 6: Final answer
    x = 6,598.81

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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.