Home / 8,316.29-11,478.35-5,664.75

Finding the Fourth Proportional to 8,316.29, 11,478.35 and 5,664.75

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Solution

The fourth proportional to 8,316.29, 11,478.35 and 5,664.75 is: 7,818.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,316.29 : 11,478.35 = 5,664.75 : x
  2. Step 2: Convert to fraction form
    8,316.29/11,478.35 = 5,664.75/x
  3. Step 3: Cross multiply
    8,316.29x = 11,478.35 × 5,664.75
  4. Step 4: Simplify right side
    8,316.29x = 65,021,983.16
  5. Step 5: Solve for x
    x = 65,021,983.16/8,316.29
  6. Step 6: Final answer
    x = 7,818.63

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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.