Home / 8,071.30-11,139.09-4,715.19

Finding the Fourth Proportional to 8,071.30, 11,139.09 and 4,715.19

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Solution

The fourth proportional to 8,071.30, 11,139.09 and 4,715.19 is: 6,507.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,071.30 : 11,139.09 = 4,715.19 : x
  2. Step 2: Convert to fraction form
    8,071.30/11,139.09 = 4,715.19/x
  3. Step 3: Cross multiply
    8,071.30x = 11,139.09 × 4,715.19
  4. Step 4: Simplify right side
    8,071.30x = 52,522,953.62
  5. Step 5: Solve for x
    x = 52,522,953.62/8,071.30
  6. Step 6: Final answer
    x = 6,507.37

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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.