Home / 7,091.28-10,621.08-5,139

Finding the Fourth Proportional to 7,091.28, 10,621.08 and 5,139

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Solution

The fourth proportional to 7,091.28, 10,621.08 and 5,139 is: 7,697.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,091.28 : 10,621.08 = 5,139 : x
  2. Step 2: Convert to fraction form
    7,091.28/10,621.08 = 5,139/x
  3. Step 3: Cross multiply
    7,091.28x = 10,621.08 × 5,139
  4. Step 4: Simplify right side
    7,091.28x = 54,581,730.12
  5. Step 5: Solve for x
    x = 54,581,730.12/7,091.28
  6. Step 6: Final answer
    x = 7,697.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.