Home / 7,156.87-9,876.68-4,012.99

Finding the Fourth Proportional to 7,156.87, 9,876.68 and 4,012.99

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Solution

The fourth proportional to 7,156.87, 9,876.68 and 4,012.99 is: 5,538.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,156.87 : 9,876.68 = 4,012.99 : x
  2. Step 2: Convert to fraction form
    7,156.87/9,876.68 = 4,012.99/x
  3. Step 3: Cross multiply
    7,156.87x = 9,876.68 × 4,012.99
  4. Step 4: Simplify right side
    7,156.87x = 39,634,998.01
  5. Step 5: Solve for x
    x = 39,634,998.01/7,156.87
  6. Step 6: Final answer
    x = 5,538.04

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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.