Home / 8,720.68-12,036.10-5,576.76

Finding the Fourth Proportional to 8,720.68, 12,036.10 and 5,576.76

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Solution

The fourth proportional to 8,720.68, 12,036.10 and 5,576.76 is: 7,696.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,720.68 : 12,036.10 = 5,576.76 : x
  2. Step 2: Convert to fraction form
    8,720.68/12,036.10 = 5,576.76/x
  3. Step 3: Cross multiply
    8,720.68x = 12,036.10 × 5,576.76
  4. Step 4: Simplify right side
    8,720.68x = 67,122,441.04
  5. Step 5: Solve for x
    x = 67,122,441.04/8,720.68
  6. Step 6: Final answer
    x = 7,696.93

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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.